Flora of North America species comparison

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Oenothera cespitosa subsp. macroglottis
Photo is of parent taxon
Habit Herbs acaulescent or short-caulescent, hirsute and glandular puberulent, or glabrous.
Stems

(if present), usually unbranched, rarely with 1–several short laterals, 4–8 cm.
Leaves

(6.8–)9.5–23(–32) × (1.3–)2.4–4.5(–6.5) cm;

petiole (3–)4–11(–14) cm;

blade oblanceolate to spatulate, margins often undulate, usually regularly to irregularly dentate, rarely coarsely and irregularly pinnately lobed.
Flowers

floral tube (45–)75–110(–153) mm;

sepals (22–)30–45(–50) mm;

petals fading pink to pale rose, (21–)35–43(–50) mm;

filaments (16–)19–28(–35) mm, anthers (10–)12–17 mm;

style 85–180 mm.
Capsules

somewhat curved, lanceoloid-cylindrical to cylindrical, symmetrical throughout, sometimes slightly flattened on one side at base, (17–)25–45(–56) × 5–8 mm, valve margins with conspicuous, nearly smooth to irregular undulate ridge;

pedicel 2–7 mm.
Seeds

narrowly obovoid, 2.5–3 × 1–1.4 mm, embryo 1/2 of seed volume, surface minutely papillose to reticulate;

seed collar forming narrow slit above raphe with a slightly sunken membrane, margin entire or obscurely sinuate distally.
2n

= 14, 28.

Oenothera cespitosa subsp. macroglottis
Phenology Flowering May–Jul(–Sep).
Habitat Open, igneous rocky slopes, talus, roadcuts, open or shaded and sandy or gravelly sites along streams, rarely on shale, in upper pinyon-juniper woodlands, Gambel oak scrub, ponderosa pine forests, ponderosa pine-Douglas fir forests, spruce-fir-lodgepole pine forests.
Elevation 2000–3100 m. (6600–10200 ft.)
Distribution
from FNA
CO; NM; UT; WY
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Pachylophus > Oenothera cespitosa
Sibling taxa
O. cespitosa subsp. cespitosa, O. cespitosa subsp. crinita, O. cespitosa subsp. marginata, O. cespitosa subsp. navajoensis
Synonyms Pachylophus macroglottis, O. cespitosa var. macroglottis, P. hirsutus
Name authority (Rydberg) W. L. Wagner, Stockhouse & W. M. Klein: Ann. Missouri Bot. Gard. 70: 195. (1983) — (as caespitosa)
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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