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calochortus_goff

Ημερομηνία

Αύγουστος 6, 2023 11:38 ΠΜ PDT

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iNaturalist doesn’t have an easy way to log things like this, being bound to one species at a time, but this is a photo of what I think is an Oxytropis parryi X borealis hybrid. The plant in the lower right is Oxytropis parryi, the plant in the upper left is Oxytropis borealis, and in the center between the two is an individual with intermediate traits. These include fewer silky grey hairs than parryi, but without the full sticky/glandular lead hairs of borealis. The size and habit is intermediate, and it has the inflorescences similar to borealis, rather than the solitary flowers of parryi. It even has erect hairs on the pedicel like borealis. More photos available for those interested. So fun!!

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arbonius

Ημερομηνία

Μάιος 19, 2023 11:12 ΠΜ PDT

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[[NOTE: Three additional (large-sized!) images of this plant (showing more of the flowering stems, and habitus) are available in this companion post on CalPhotos. Check out the "full-size" photos there.

Also, remarks on diagnostic characters (and some descriptive morphology) for Nemacladus morefieldii appear under the this CalPhotos post. ]]

====== Variation in Characters for Nemacladus morefieldii ======

I'm struck by some of the variation in this (lovely) species.

1) Marginal "chevron" markings on upper three corolla lobes: For instance, note how narrow the reddish "chevrons" of the three upper corolla lobes are in the flowers of the plant here...vs. the much wider marginal chevrons in my CalPhotos post referenced above. Similar variation will be seen upon perusing photos of N. morefieldii on iNaturalist, CalPhotos, and CalFlora.

2) Relative sizes of "flanking" and "central" sepals: Another character that is celebrated for "good" N. morefieldii (i.e. in plants that have taken time to read & comply with the circumscription ;;-) is that the "flanking sepals" (= lateral sepals behind, and angled somewhat below, the lateral petals of the upper lip) are appreciable larger than the "central (upper) sepals" (= those alternating with the uppermost corolla lobe, and positioned behind its sinuses). Not only are those flanking sepals typically somewhat longer and (especially) wider than the upper sepals...but usually they're also distinctly more "cupped", and cradle the lateral lobes of the upper corolla lip — i.e. more so than the flanking sepals in flowers of the close congener N. orientalis (which, in addition, has its sepal of more equal size). It's best to have a "from the back" view of a flower to assess the relative sizes of the flanking & central sepals...which I didn't get here. But, in the first photo here, one can see that the flanking sepals in the withering flower at left-center are somewhat wider & longer than its central sepals. This is a nice distinctive character...though it does seem to vary quite a bit.

3) Relative size (or even absence?) of "rod-like processes": Finally, I've been wondering how much variation in size (and perhaps even presence?) occurs for the glistening, translucent, "rod-like processes" at the bases of the two adaxial stamens. In the flowers imaged here I can clearly discern the presence of these rods...whereas in my CalPhotos post here they aren't discernible. I know from experience that getting a photo with those rod-like processes in focus can be very difficult...since in most Nemacladus species these rods are exceedingly tiny, and there's very little "depth-of-field leeway" for one's focal plane at the high-magnification required to image them. But still, I'd think that even if focus is a bit off, there'd be at least a blurry intimation (or ghost-image) of the rods? But maybe not? At any rate, perusing photos of N. morefieldii, it seems like in some flowers the rods appear distinctly present, while in others they appear to be absent. It may be worth checking fresh flowers seen in the field with a hand-lens...to see if they have a fairly consistent presence & size for these rods (i.e. if their seemingly random "presence" and "absence" in photos is truly just an artifact of getting photographic focus just right).

I suppose whether the rods are visible might also be subject to phenology? How long does it take for a Nemacladus flower to fully-develop...to open and unfurl its corolla lobes, for its staminal tube to attain full length and standard position? Do the rods attain full size in bud, or perhaps continue to grow a bit after the flower opens and as it matures...passing from its "male" anther-dehiscing stage through to its "female" stage of stigma receptivity? And how many days does a given flower remain open during this process? One, two, more?

There are always more questions to ponder with these wonderful plants :-)

====== Pollination Biology in Nemacladus ======

I'm especially curious & eager for us to learn more about which groups of insects are effective pollinators of Nemacladus flowers...and details of the pollination processes that occur & their mechanisms (e.g. Campanulaceae is known for its remarkable secondary pollen presentation structures & mechanisms).

For instance, I'd speculate that species with non-resupinate flowers like N. morefieldii (and N. orientalis, N. montanus, N. interior, etc.) would tend to place pollen on the underside of a visiting insect of the appropriate size (i.e. sternotribic pollen placement). And for resupinate-flowered species, I'd guess pollen placement would more likely be on the upperside of an insect visitor's body (i.e. nototribic). But a priori speculation about pollination processes based on flower morphology has often turned out to be off-the-mark. ;-) Careful direct observation & documention of pollinator visits and behavior (and thoughtful, creative experimentation)...though very time-consuming and laborious...is probably the best avenue for making progress on this front.

I also wonder to what extent (and under what conditions) self-pollination may occur in Nemacladus?

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joergmlpts

Ημερομηνία

Απρίλιος 20, 2023 01:23 ΜΜ PDT

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matt_g

Ημερομηνία

Απρίλιος 2023

Τόπος

California, US (Google, OSM)

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Τι

Ξάνθιο Το Χοιράδιον (Xanthium strumarium)

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matsonburger

Ημερομηνία

Μάιος 21, 2019 12:28 ΜΜ PDT

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tim_mathewson

Ημερομηνία

Μάιος 30, 2022 12:18 ΜΜ MST

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cabbagefreak

Ημερομηνία

Ιούνιος 12, 2022 06:09 ΜΜ PDT

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flaveboy

Ημερομηνία

Οκτώβριος 30, 2022 10:36 ΠΜ PDT

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3 of these growing on kelso dunes - see my other observations

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hkibak

Ημερομηνία

Νοέμβριος 1, 2022 03:12 ΜΜ PDT

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mdpurdy

Ημερομηνία

Ιούλιος 2021

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Associated with (from same population as) collection Purdy 1141.

Population size estimated at ca. 40 plants. Most vegetative, none in flower, and only 3 in fruit.

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matsonburger

Ημερομηνία

Ιούνιος 2022

Τόπος

California, US (Google, OSM)

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wildgifts

Ημερομηνία

Ιούνιος 18, 2022 12:25 ΜΜ PDT

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Collection #1265

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joeysantore

Ημερομηνία

Μάιος 11, 2022 06:23 ΜΜ CAT

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The only other plant found growing in the immediate vicinity was a succulent shrub species of Amaranthaceae, Arthraerua leubnitziae. Heavy fog in the morning. Ten miles East, no fog. In this way Welwitschia can be seen to be a relictual species somewhat akin to coastal redwoods of California, both clinging to a narrow strip along the coast of a cold ocean where they can find what they need to survive and in the case of Welwitschia, avoid competition.

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evolvulux

Ημερομηνία

Μάιος 22, 2021 12:36 ΜΜ MDT

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wildgifts

Ημερομηνία

Ιούλιος 22, 2021 10:00 ΠΜ PDT

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walterfertig

Ημερομηνία

Ιούνιος 2014

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madge

Ημερομηνία

Απρίλιος 10, 2021 11:54 ΠΜ PDT

Τόπος

Ensenada, BC , MX (Google, OSM)

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jrebman

Ημερομηνία

Απρίλιος 10, 2021 12:08 ΜΜ PDT

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rogerstephens

Ημερομηνία

Απρίλιος 8, 2021 09:09 ΠΜ PDT

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swinitsky

Ημερομηνία

Μάιος 2019

Τόπος

California, US (Google, OSM)

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efmer

Ημερομηνία

Μάρτιος 3, 2019 10:02 ΠΜ PST

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alan_rockefeller

Ημερομηνία

Αύγουστος 18, 2020 03:11 ΜΜ PDT

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matsonburger

Ημερομηνία

Μάιος 2, 2019 10:44 ΠΜ PDT

Τόπος

Lead gulch (Google, OSM)

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gentilcore

Ημερομηνία

Απρίλιος 2018

Τόπος

United States (Google, OSM)

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USA, Nevada, Clark County, Gold Butte National Monumnet: The spectacular yellow Las Vegas Bearpaw Poppy flowers blooming on barren gypsum hills near Little Finland.

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micahlauer

Ημερομηνία

Ιούνιος 7, 2019 09:53 ΠΜ MDT

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Growing out of the very top of Delicate Arch... A sea of tourists taking selfies under the most well-known arch in the U.S. and of course I'm drawn to the native plant it's wearing as a hat. ha ha.

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ob1963

Ημερομηνία

Νοέμβριος 24, 2013 03:10 ΜΜ PST

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sheriff_woody_pct

Ημερομηνία

Μάιος 22, 2020 12:04 ΜΜ PDT

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kerinnag

Ημερομηνία

Μάιος 13, 2020 10:39 ΠΜ MST

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sheriff_woody_pct

Ημερομηνία

Μάρτιος 2020

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sheriff_woody_pct

Ημερομηνία

Μάιος 2020

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I almost can’t believe it myself, but it has to be this. We just went and saw Lewisia maguirei in the Quinn Canyon Range YESTERDAY. About 150 air miles from this location in the Spring Mountains. About 50 plants. South and west facing limestone slope near top of small ridge. We looked at the sepals of 20 flowers, 19 had 3 sepals and 1 had 4 sepals. Plants had 2-3 flowers per inflorescence. :)!

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coreyk

Ημερομηνία

Απρίλιος 15, 2011 02:53 ΜΜ PDT

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adrienneleihy

Ημερομηνία

Οκτώβριος 31, 2019 03:37 ΜΜ PDT

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sheriff_woody_pct

Ημερομηνία

Απρίλιος 19, 2020 08:20 ΠΜ PDT

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lonnyholmes

Ημερομηνία

Απρίλιος 11, 2020 12:38 ΜΜ PDT

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sheriff_woody_pct

Ημερομηνία

Μάρτιος 28, 2020 03:50 ΜΜ PDT

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dgreenberger

Ημερομηνία

Μάρτιος 2020

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Αμερικανικό Πίκα (Ochotona princeps)

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laurenscheinberg

Ημερομηνία

Αύγουστος 13, 2015 03:10 ΜΜ HST

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ekoberle

Ημερομηνία

Δεκέμβριος 28, 2019 07:58 ΠΜ PST

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Two separate cones near each other in wash adjacent to Mesquite Spring Campground. Must've traveled quite a great distance to get to this point.

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rhjackso

Ημερομηνία

Ιανουάριος 2, 2020 08:34 ΠΜ PST

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rhjackso

Ημερομηνία

Ιανουάριος 2, 2020 11:12 ΠΜ PST

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naomibot

Ημερομηνία

Σεπτέμβριος 23, 2018 12:45 ΜΜ PDT

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sheliahargis

Ημερομηνία

Οκτώβριος 21, 2017 10:55 ΠΜ CDT

Τόπος

Commons Ford (Google, OSM)

Περιγραφή

Not sure what is going on but this is the fourth birder that I know of who has had a phoebe perch on their binoculars or on their person at Commons Ford.

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coreyjlange

Ημερομηνία

Απρίλιος 22, 2019 03:52 ΜΜ PDT

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micrathene

Ημερομηνία

Φεβρουάριος 18, 2019 02:42 ΜΜ MST

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carmelo_lopez

Ημερομηνία

Οκτώβριος 11, 2009

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walterfertig

Ημερομηνία

Ιούνιος 2011

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Yermo xanthocephalus in flower (note the yellow phyllaries)

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storm_petrel

Ημερομηνία

Σεπτέμβριος 15, 2017 03:46 ΜΜ PDT

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Pink family? one of the few hardy plants that grow on the Negit islets

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yaelorgad

Ημερομηνία

Μάιος 18, 2018 05:41 ΜΜ IDT

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buzzard

Ημερομηνία

Μάρτιος 2016

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glmory

Ημερομηνία

Ιούλιος 31, 2017 02:13 ΜΜ PDT

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Τι

Ανθρώπου (Homo sapiens)

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robberfly

Ημερομηνία

Ιούλιος 25, 2018 12:45 ΜΜ PDT

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iNaturalists gather at 10,000 ft. to count Butterflies on White Mountain. l to r: @sea-kangaroo @maractwin @catchang @robberfly @leptonia @storm_petral

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carolannie1949

Ημερομηνία

Μάιος 29, 2016 11:33 ΠΜ MDT

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These were blooming all over the area above the Dominguez Canyon, bright spots of yellow opening for one day and then dying, ready for another set to bloom tomorrow. They don't have time for fancy smooth petals, so the wrinkled linen look is in.

A beetle resting in the shade of some petals is par for the course!

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lonnyholmes

Ημερομηνία

Μάιος 1, 2018 12:25 ΜΜ PDT

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ambiguus or thurberi?