Sidotheca trilobata |
Sidotheca caryophylloides |
|
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three lobed oxytheca, three-lobed starry puncturebract, threelobe starry puncturebract |
chickweed oxytheca, chickweed starry puncturebract |
|
Habit | Plants 0.7–5 × 0.7–6(–11) dm. | Plants 1–2.5 × (0.3–)1–4(–5) dm. |
Stems | erect or more commonly spreading to prostrate. |
spreading to prostrate. |
Leaf | blades spatulate to oblanceolate or linear, 1–5(–9) × 0.2–0.7(–2) cm. |
blades spatulate to oblanceolate, 1–6(–8) × 0.3–1.2(–1.8) cm. |
Inflorescences | open, 0.5–4 dm; bracts mostly 2–8 × 1–3 mm, awns 0.8–1 mm. |
diffuse, 0.5–2 dm; bracts 3–8 × 0.5–1.5 mm, awns 0.2–0.5 mm. |
Peduncles | erect to spreading, 0.5–1.5 cm, glabrous except sparsely glandular proximally. |
erect, 0.1–1 cm, sparsely glandular or glabrous, otherwise absent. |
Involucres | concolored, broadly turbinate, 3–8 mm, sparsely glandular; teeth 5(–6), connate 1/3–1/2 their length; awns greenish to reddish, 0.3–2 mm. |
concolored, narrowly to broadly turbinate, 4–7 mm, sparsely glandular; teeth 5(–6), connate ca. 1/2 their length; awns greenish to reddish, 0.3–1 mm. |
Flowers | 3–5(–10); perianth white to pink or reddish, 2.5–4 mm; tepals oblong, 3-lobed apically 1/3–1/2 their length, lobes sometimes laciniate; filaments 1–4 mm; anthers red to maroon, ellipsoid to oval, 0.5–0.7 mm. |
2–3; perianth greenish yellow to reddish, 1–2 mm; tepals broadly oblanceolate, 3-lobed apically 1/5 their length, lobes not laciniate; filaments 0.8–1.2 mm; anthers red, oval, 0.2–0.4 mm. |
Achenes | golden-brown, 1.2–2 mm. |
golden to red-brown, 1.2–1.5 mm. |
2n | = 40. |
= 40. |
Sidotheca trilobata |
Sidotheca caryophylloides |
|
Phenology | Flowering Apr–Sep. | Flowering Jun–Sep. |
Habitat | Sandy flats, washes, slopes, chaparral communities, montane coniferous woodlands | Sandy to gravelly flats, washes, and slopes, chaparral communities, montane conifer woodlands |
Elevation | 700-2100 m (2300-6900 ft) | 1300-2600 m (4300-8500 ft) |
Distribution |
CA; Mexico (Baja California)
|
CA
|
Discussion | Sidotheca trilobata occurs in the Transverse Ranges of southern California from Los Angeles and San Bernardino counties southward into northern Baja California, Mexico. It is the most commonly encountered species of the genus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sidotheca caryophylloides grows in the Transverse Ranges and the southern Sierra Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 440. | FNA vol. 5, p. 440. |
Parent taxa | Polygonaceae > subfam. Eriogonoideae > Sidotheca | Polygonaceae > subfam. Eriogonoideae > Sidotheca |
Sibling taxa | ||
Synonyms | Oxytheca trilobata, Eriogonum trilobatum | Oxytheca caryophylloides, Eriogonum caryophylloides |
Name authority | (A. Gray) Reveal: Harvard Pap. Bot. 9: 211. (2004) | (Parry) Reveal: Harvard Pap. Bot. 9: 211. (2004) |
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