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deceiving gayophytum, deceptive groundsmoke

Habit Herbs glabrous or villous to strigillose.
Stems

erect or proximalmost branches decumbent, branched throughout, usually with 2–8 nodes between branches, branching usually not dichotomous, 5–50 cm.

Leaves

somewhat reduced distally, 10–32 × 1–4 mm;

petiole 0–5 mm;

blade narrowly lanceolate to sublinear.

Inflorescences

with flowers arising as proximally as first 1–5 nodes from base.

Flowers

sepals 0.7–1.1 mm, reflexed singly;

petals 1.1–1.8 mm;

pollen 90–100% fertile;

stigma subglobose, surrounded by anthers at anthesis.

Capsules

usually ascending, rarely reflexed, not conspicuously flattened, 6–15 × 0.6–1 mm, with inconspicuous constrictions between seeds, valve margins slightly undulate, all valves free from septum after dehiscence, septum straight;

pedicel 0–5 mm.

Seeds

10–25, all developing, arranged ± parallel to septum and subopposite seeds in adjacent locule, forming 2 even rows in capsule, light brown, sometimes mottled with dark brown, 0.8–1.8 × 0.3–0.7 mm, glabrous or densely puberulent.

2n

= 14.

Gayophytum decipiens

Phenology Flowering May–Sep.
Habitat Sandy or gravely soil, in pinyon-juniper woodlands and pine forests, desert ranges, mountains bordering desert areas.
Elevation 1800–4200 m. (5900–13800 ft.)
Distribution
from FNA
AZ; CA; CO; ID; MT; NV; OR; UT; WA; WY; MMex
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Discussion

Gayophytum decipiens may be one of the parents of the allotetraploid species G. racemosum. Since some collections of the tetraploid G. diffusum subsp. parviflorum closely resemble G. decipiens, the latter has probably contributed to the extensive variation in the G. diffusum polyploid complex. Among the diploid species, G. decipiens is most similar to G. ramosissimum but can be distinguished by its branching habit and capsules.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Gayophytum
Sibling taxa
G. diffusum, G. eriospermum, G. heterozygum, G. humile, G. oligospermum, G. racemosum, G. ramosissimum
Name authority H. Lewis & Szweykowski: Brittonia 16: 368, figs. 5H, 6C. (1964)
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