Chorizanthe pungens |
Chorizanthe orcuttiana |
|||||
---|---|---|---|---|---|---|
Monterey spineflower |
Orcutt spineflower, Orcutt's spineflower, San Diego spineflower |
|||||
Habit | Plants prostrate to ascending or erect, 0.5–2(–2.5) × 0.5–10 dm, grayish-villous. | Plants prostrate, 0.1–0.5 × 0.3–2(–2.5) dm, villous. | ||||
Leaves | basal; petiole (0.5–)1–3(–4) cm; blade oblanceolate, (0.5–)1–5(–7) × (0.3–)0.4–0.7(–1) cm, villous. |
basal; petiole 1–2 cm; blade narrowly oblanceolate, 0.5–1.5 × 0.2–0.35(–0.5) cm, thinly pubescent. |
||||
Inflorescences | rather dense with secondary branches suppressed, grayish; bracts 2, similar to leaf blades at proximal nodes only reduced, short-petiolate, becoming linear and aciculate at distal nodes, acerose, 0.5–7 cm × 2–7 mm, awns 0.5–1.2 mm. |
with involucres in small clusters 0.5–1 cm diam., greenish; bracts 2, sessile, unequal, 1 laminar and oblanceolate, 0.3–1 cm × 1–3 mm, awnless, this opposite linear, acicular, greatly reduced, 0.1–0.2 cm × 0.3–0.6 mm bract terminated by short, straight awn 0.6–1 mm. |
||||
Involucres | 1, grayish, cylindric, often ventricose basally, 2–2.5(–3) mm, with distinct, white to pink or purple, scarious margins extending nearly full length of awn, corrugate, villous abaxially; teeth spreading, equal, 0.5–1.5 mm; awns uncinate with longer ones 2–3 mm and alternating with shorter (1–1.5 mm) ones. |
1, greenish, campanulate, 3-ribbed, 0.8–2 mm, faintly corrugate, pubescent; teeth 3, equal, 1.8–2 mm; awns uncinate, 0.6–1 mm. |
||||
Flowers | exserted; perianth bicolored with floral tube white and tepals white to rose, cylindric, 2–3.5 mm, pubescent abaxially; tepals connate less than 1/4 their length, monomorphic, obovate to oblong, acute to truncate and erose apically; stamens 9, slightly exserted; filaments distinct, 2–3 mm, glabrous; anthers cream to rose, ovate, 0.3–0.4 mm. |
1, included to slightly exserted; perianth yellow, cylindric, 1.5–1.8 mm, densely pubescent abaxially; tepals connate ca. 1/2 their length, monomorphic, narrowly oblanceolate, obtuse to truncate, entire apically, slightly spreading; stamens 9, slightly exserted; filaments distinct, 0.5–0.8 mm, glabrous; anthers reddish, ovate, 0.2–0.3 mm. |
||||
Achenes | dark brown, globose-lenticular, 2–2.5 mm. |
dark brown, lenticular, 2–2.2 mm. |
||||
2n | = (76, 78), 80, (84). |
|||||
Chorizanthe pungens |
Chorizanthe orcuttiana |
|||||
Phenology | Flowering Mar–May. | |||||
Habitat | Sandy soil, mesas and hills near coast, coastal scrub communities | |||||
Elevation | 60-200 m (200-700 ft) | |||||
Distribution |
CA
|
CA |
||||
Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Chorizanthe orcuttiana is known from a few populations on coastal mesas and hills near San Diego, San Diego County. It is federally listed as endangered. The species is an octoploid that may well have resulted from an ancient hybridization and doubling of chromosomes involving C. procumbens and C. polygonoides var. longispina. The Orcutt spineflower grows in soft, white sand; C. procumbens and C. polygonoides var. longispina are restricted to gravelly sites. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||
Key |
|
|||||
Source | FNA vol. 5, p. 453. | FNA vol. 5, p. 467. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Bentham: Trans. Linn. Soc. London 17: 419, plate 19, fig. 2. (1836) | Parry: Proc. Davenport Acad. Nat. Sci. 4: 54. (1884) | ||||
Web links |