Oxytheca watsonii |
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Watson's oxytheca, Watson's puncturebract |
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Habit | Plants erect to spreading, 0.5–2.5 × 0.4–4 dm. |
Stems | glandular throughout. |
Leaf | blades spatulate or obovate to oblanceolate, 0.7–4 × (0.1–)0.5–1.2 cm, strigose adaxially, less so abaxially, sparsely glandular on both surfaces. |
Inflorescences | open to densely branched, 0.5–2 dm; bracts 1–5 × 0.5–3 mm, 3(–5) at first node and linear to ovate, otherwise distinct or basally connate and linear to triangular, ciliate and glandular; awns 1–3 mm. |
Peduncles | deflexed, stout, 0.2–0.5 cm at proximal nodes, sometimes absent. |
Involucres | 1.5–2 mm, typically glabrous, rarely with few scattered hairs abaxially; teeth 4; awns reddish, 2.5–3 mm. |
Flowers | 2–4(–7); perianth white to pink, 1–1.5 mm, strigose and sparsely glandular abaxially; tepals dimorphic, entire, those of outer whorl oval to ovate and strigose abaxially, those of inner elliptic to oval or ovate and glabrous or sometimes pubescent adaxially at base; filaments 1–1.5 mm, glabrous; anthers cream to red, oval, 0.2 mm. |
Achenes | dark brown to maroon, 1–1.5 mm. |
2n | = 40. |
Oxytheca watsonii |
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Phenology | Flowering Jun–Oct. |
Habitat | Sandy flats and slopes, saltbush communities |
Elevation | 1200-2000 m (3900-6600 ft) |
Distribution |
CA; NV |
Discussion | Oxytheca watsonii is an uncommon species known only from scattered locations. The name was misapplied in pre-1980 California floras to Acanthoscyphus parishii var. goodmaniana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 436. |
Parent taxa | |
Sibling taxa | |
Synonyms | Eriogonum cuspidatum |
Name authority | Torrey & A. Gray: Proc. Amer. Acad. Arts 8: 191. (1870) |
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