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Platanthera yosemitensis
YOSEMITE BOG-ORCHID

Higher Taxonomy
Family: OrchidaceaeView DescriptionDichotomous Key

Common Name: ORCHID FAMILY
Habit: Perennial herb, terrestrial [growing on other pls], non-green (nutrition from association of roots with fungi) or green, generally from rhizomes or tubers with few to many fleshy to slender roots; cauline leaves +- reduced to sheathing stem bracts or not. Leaf: 1--many, basal to cauline, linear to +- round, alternate to opposite (if only 1 pair), generally sessile. Inflorescence: flowers 1--many, spike or raceme, bracted. Flower: bisexual, bilateral, in bud generally rotating 180° by twisting ovary (position of parts indicated after twisting); sepals generally 3, generally free, generally petal-like, uppermost generally erect, lateral with chin- or spur-like projection (mentum) or not; petals 3, 1 (lip) different, spurred or not; stamens generally 1 (3 in Cypripedium, 2 functional, 1 a staminode), fused with style, stigma into column, pollen generally lumped, generally removed as unit by insect; ovary inferior, 1-chambered, placentas 3, parietal, stigma 3 lobed, generally under column tip. Fruit: capsule. Seed: many, minute.
Genera In Family: +- 800 genera, +- 25000 species: especially tropics (worldwide except Antarctica). Many cultivated for ornamental, especially Cattleya, Cymbidium, Epidendrum, Oncidium, Paphiopedilum; Vanilla planifolia Andrews fruits used to flavor food. Note: Platanthera may be paraphyletic without inclusion of Piperia (Bateman et al. 2009 Ann Bot 104:431--445); study needed.
eFlora Treatment Author: Ronald A. Coleman, Dieter H. Wilken & William F. Jennings, except as noted
Scientific Editor: Ronald A. Coleman, Thomas J. Rosatti.
Genus: PlatantheraView DescriptionDichotomous Key

Common Name: BOG-ORCHID
Habit: Rhizome tuber-like, elongate. Leaf: cauline, alternate, linear to elliptic or lanceolate, gradually reduced upward, with 1 lengthwise fold. Inflorescence: generally spike; flower bracts leaf-like. Flower: perianth white to yellow-green or green; sepals +- equal, upper generally hood-like, lower free, generally spreading; lateral petals generally erect, lip spurred, pendent to upcurved; column +- erect. Fruit: ascending to erect.
Species In Genus: +- 85 species: temperate North America, Eurasia. Etymology: (Greek: wide anther) Note: Identification often difficult due to intermediates, hybrids; additional species expected in California. Platanthera hyperborea (L.) Lindl. not in California.
Unabridged Note: In California, > 1 sp. often occurs in a given area and blooms at +- the same time, yielding many hybrids and hybrid swarms, including some that have not been named, e.g., Platanthera dilatata × Platanthera tescamnis, as well as others that have, e.g., Platanthera ×estesii W.J. Schrenk (Platanthera dilatata × Platanthera stricta) and Platanthera ×lassenii W.J. Schrenk (Platanthera dilatata × Platanthera sparsiflora). Some purported hybrids, e.g., Platanthera ×correllii W.J. Schrenk and Platanthera ×media (Rydb.) Luer, now treated as a synonym of Platanthera huronensis (Nutt.) Lindl., do not occur in California.
eFlora Treatment Author: Ronald A. Coleman

Platanthera yosemitensis Colwell, Sheviak, & P.E. Moore
NATIVE
Habit: Plant 20--80 cm. Leaf: 5--7, clustered below, 9--25 cm, 1.5--3 cm wide, lanceolate, tip acute. Flower: strongly pungent; sepals green, upper ovate, lateral oblong; petals 3--4 mm, +- yellow, ovate-deltoid, forming hood with upper sepal, lip 4--6 mm, generally lance-rhombic, often upturned, yellow, spur sac-like, 2--28 mm; column <= +- 1/2 hood formed by upper sepal, petals, rounded, anther sacs generally parallel. Fruit: capsule, 0.3--1 cm. Chromosomes: 2n=42.
Ecology: Wet meadows; Elevation: 2100--2285 m. Bioregional Distribution: c SNH (Yosemite National Park), s SNH. Flowering Time: Jul--Aug
eFlora Treatment Author: Ronald A. Coleman
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Listed on CNPS Rare Plant Inventory

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Citation for this treatment: Ronald A. Coleman 2016. Platanthera yosemitensis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81385, accessed on August 24, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 24, 2016.


Platanthera yosemitensis
click for enlargement
© 2016 Keir Morse
Platanthera yosemitensis
click for enlargement
© 2016 Keir Morse
Platanthera yosemitensis
click for enlargement
© 2016 Keir Morse
Platanthera yosemitensis
click for enlargement
© 2016 Keir Morse
Platanthera yosemitensis
click for enlargement
© 2016 Keir Morse
Platanthera yosemitensis
click for enlargement
© 2016 Keir Morse

More photos of Platanthera yosemitensis in CalPhotos


Geographic subdivisions for Platanthera yosemitensis:
c SNH (Yosemite National Park), s SNH.
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.