Flora of North America species comparison

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Oenothera capillifolia subsp. capillifolia
Photo is of parent taxon
Habit Herbs annual or short-lived perennial.Stems 1–several, unbranched or sparsely branched, ascending to erect, 30–80 cm.
Leaves

2.5–9 × 0.2–1 cm;

blade margins remotely serrulate to spinulose-serrate.
Flowers

buds with free tips 0.5–4 mm;

sepals with conspicuously keeled midribs.
2n

= 14.

Oenothera capillifolia subsp. capillifolia
Phenology Flowering Mar–Sep.
Habitat Prairies, open places in oak savannas on rocky, clay, or sandy soil, often calcareous.
Elevation 0–900 m. (0–3000 ft.)
Distribution
from FNA
LA; OK; TX
Discussion

Subspecies capillifolia occurs from Blaine and Lincoln counties, Oklahoma, south through a narrow portion of north-central Texas to central Texas, where it is widely distributed, especially on the Edwards Plateau; also occurring locally in western and southern Louisiana. The floral tubes and/or stigma of some populations, especially from Bexar, Blanco, Comal, Gillespie, Hays, Kendall, Kerr, and Travis counties, Texas, are a deep blackish purple, while others are yellow, which is typical of the section.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Calylophus > subsect. Calylophus > Oenothera capillifolia
Sibling taxa
O. capillifolia subsp. berlandieri
Synonyms Calylophus berlandieri subsp. pinifolius, Meriolix hillii, M. melanoglottis, M. serrulata var. pinifolia, O. berlandieri subsp. pinifolia, O. serrulata var. maculatah., O. serrulata subsp. pinifolia, O. serrulata var. pinifolia
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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