Difference between revisions of "Platanthera dilatata"
Bot. North. Middle States, 347. 1833.
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
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|publication year=1833 | |publication year=1833 | ||
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| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V26/V26_1133.xml |
|subfamily=Orchidaceae subfam. Orchidoideae | |subfamily=Orchidaceae subfam. Orchidoideae | ||
|tribe=Orchidaceae tribe Orchideae | |tribe=Orchidaceae tribe Orchideae | ||
Revision as of 22:12, 27 May 2020
Plants 11–130 cm or more. Leaves few–several, ascending to recurved-spreading, scattered along stem, gradually reduced to bracts distally; blade linear, linear-lanceolate, oblong, or oblanceolate, 3.5–32 × 0.3–7 cm. Spikes very lax to very dense. Flowers resupinate, rather showy, conspicuous, white; lateral sepals spreading to reflexed; petals ovate- to linear-lance-falcate, margins entire; lip descending or apex adhering to dorsal sepal and petal apices, linear-lanceolate to lanceolate, without basal thickening, 4–11 × 2–5 mm, base slightly rounded-dilated to orbiculate, rarely rhombic, margins entire; rostellum lobes parallel to slightly divergent, directed downward, very small, obscure, rounded; pollinaria straight; pollinia remaining enclosed in anther sacs; ovary rather slender to stout, 5–15 mm. 2n = 42.
Distribution
North America.
Discussion
Varieties 3 (3 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Spur shorter than lip, clavate to slightly capitate. | Platanthera dilatata var. albiflora |
| 1 | Spur nearly equaling to exceeding lip, slender to slightly clavate. | > 2 |
| 2 | Spur about equal to lip (mostly within 2 mm). | Platanthera dilatata var. dilatata |
| 2 | Spur markedly exceeding lip (commonly 11/2 or more times length of lip). | Platanthera dilatata var. leucostachys |