Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

ORCHIDACEAE

ORCHID FAMILY

Dieter H. Wilken and William F. Jennings

Perennial, terrestrial in CA, some nongreen, generally from rhizomes
Leaves linear to ± round or scale-like, generally sessile
Inflorescence: generally raceme or spike, bracted
Flower bisexual, bilateral, sometimes spurred; sepals generally 3, generally petal-like, generally free, uppermost generally erect; petals 3, lowest different ("lip"); stamen generally 1, fused with style and stigma into column, pollen generally sticky, generally removed as sessile anther sacs; ovary inferior, generally twisted 180° (so lip appears to be lowest perianth segment), 1-chambered, placentas 3, parietal; stigmas 3, generally under column tip
Fruit: capsule
Seeds very many, minute
Genera in family: ± 800 genera, ± 18,000 species: especially tropical (worldwide except deserts). Many cultivated for ornamental, especially Cattelya, Cymbidium, Epidendrum, Oncidium, Paphiopedalum; Vanilla planifolia fruits used as source of food flavoring
Reference: [Luer 1975 Orchids US and Can, NY Bot Garden; Coleman 1995 Wild Orchids of California, Cornell Univ.]
Nongreen plants derive nutrition through fungal intermediates.

PLATANTHERA

BOG-ORCHID

Caudex cylindric to fusiform
Leaves basal and cauline; basal 1–2 generally < lower cauline; cauline linear to elliptic, gradually reduced upward
Inflorescence generally spike; flower bracts leaf-like
Flower: perianth white to greenish; sepals ± equal, upper generally hood-like, lower free, generally spreading; lateral petals generally erect; lip pendent to upcurved, spurred from back; column ± erect, tip (often the stigma) separating pollen sacs
Fruit ascending to erect
Species in genus: ± 85 species: temp North America, Eurasia
Etymology: (Greek: wide anther)

Native

P. sparsiflora (S. Watson) Schltr.

SPARSE-FLOWERED BOG-ORCHID

Plant 25–55 cm
Leaves: cauline 4–15 cm, 5–30 mm wide
Inflorescence generally 15–40 cm, ± open; lowest flowers generally not overlapping
Flower: perianth green; sepals 5–9 mm; lip 6–10 mm, ± linear; spur ± = lip, ± cylindric, slightly curved, tip acute; column 2.5–4 mm
Ecology: Wet meadows, streambanks, coniferous forest
Elevation: 300–3400 m.
Bioregional distribution: Northwestern California (except Inner North Coast Ranges), High Sierra Nevada, Transverse Ranges, Peninsular Ranges, East of Sierra Nevada
Distribution outside California: to Washington, Colorado, New Mexico
Flowering time: May–Sep
Synonyms: Habenaria s. S. Watson
Horticultural information: DFCLT.

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