Sidotheca emarginata |
Sidotheca caryophylloides |
|
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white-margin starry puncturebract, white-margined oxytheca |
chickweed oxytheca, chickweed starry puncturebract |
|
Habit | Plants 0.3–3 × 0.3–5 dm. | Plants 1–2.5 × (0.3–)1–4(–5) dm. |
Stems | spreading to prostrate. |
spreading to prostrate. |
Leaf | blades spatulate to oblanceolate, 1.5–7.5 × 0.4–1.5 cm. |
blades spatulate to oblanceolate, 1–6(–8) × 0.3–1.2(–1.8) cm. |
Inflorescences | open, 0.2–3 dm; bracts mostly 5–10 × 1–3(–5) mm, awns 1–2 mm. |
diffuse, 0.5–2 dm; bracts 3–8 × 0.5–1.5 mm, awns 0.2–0.5 mm. |
Peduncles | erect, 0.5–3 cm, glandular. |
erect, 0.1–1 cm, sparsely glandular or glabrous, otherwise absent. |
Involucres | white-margined, broadly funnelform and laterally compressed, 4–8 × 9–12 mm, glabrous; teeth 5, connate more than 3/4 their length, awns reddish, 1–1.5 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 | 3–6; perianth white to pink, (2–)3–4.5(–5) mm; tepals narrowly oblong, 3–5-lobed apically 1/3–1/2 their length, lobes laciniate; filaments 3–5 mm; anthers red, oval to oblong, 1–1.2 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, 1.8–2 mm. |
golden to red-brown, 1.2–1.5 mm. |
2n | = 40. |
|
Sidotheca emarginata |
Sidotheca caryophylloides |
|
Phenology | Flowering Feb–Aug. | Flowering Jun–Sep. |
Habitat | Gravelly to rocky places, chaparral communities, montane coniferous woodlands | Sandy to gravelly flats, washes, and slopes, chaparral communities, montane conifer woodlands |
Elevation | 1200-2500 m (3900-8200 ft) | 1300-2600 m (4300-8500 ft) |
Distribution |
CA |
CA
|
Discussion | Sidotheca emarginata grows in the San Jacinto and Santa Rosa mountains of Riverside County. The white-margined, papery involucre is a distinctive feature that might make the plant an attractive addition to an annual garden. of conservation concern (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 | ||
Sibling taxa | ||
Synonyms | Oxytheca emarginata, Eriogonum emarginatum | Oxytheca caryophylloides, Eriogonum caryophylloides |
Name authority | (H. M. Hall) Reveal: Harvard Pap. Bot. 9: 211. (2004) | (Parry) Reveal: Harvard Pap. Bot. 9: 211. (2004) |
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