Arctostaphylos purissima |
Arctostaphylos densiflora |
|
---|---|---|
La Purisima manzanita, La Purissima manzanita |
Vine Hill manzanita |
|
Habit | Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. | Shrubs, erect or mound-forming, ca. 1 m; burl absent; twigs sparsely short-hairy. |
Leaves | petiole to 2 mm; blade bright green, shiny, orbiculate-ovate to ± orbiculate, 1–2.5 × 1–2 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous. |
petiole 4–5 mm; blade bright green, lustrous, elliptic to narrowly lanceolate-elliptic, 1–2.5 × 0.5–1.5 cm, base cuneate to obtuse, margins entire, plane, surfaces smooth, sparsely puberulent. |
Inflorescences | racemes, simple or 1–2-branched; immature inflorescence pendent, (branches dense, concealed by bracts), axis 0.5–1 cm, 1+ mm diam., densely short-hairy with longer hairs; bracts not appressed, (overlapping), leaflike, ovate to lanceolate-ovate, 5–8 mm, apex acute, surfaces glabrous. |
panicles, 3–5-branched; immature inflorescence pendent, (compact), branches ± spreading, axis 1–1.5 cm, 1+ mm diam., sparsely short-hairy; bracts not appressed, scalelike, deltate to awl-like, 1.5–3 mm (longer than buds), apex acute, surfaces glabrous. |
Pedicels | 3–5 mm, sparsely hairy or glabrous. |
4–5 mm, glabrous. |
Flowers | corolla white, conic to urceolate; ovary glabrous. |
corolla white, urceolate; ovary glabrous. |
Fruits | depressed-globose, 5–8 mm diam., glabrous. |
subglobose, 5–6 mm diam., glabrous. |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos purissima |
Arctostaphylos densiflora |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Maritime chaparral on deep, sandy soils | Acidic marine sands |
Elevation | 0-100 m (0-300 ft) | 100 m (300 ft) |
Distribution |
CA
|
CA
|
Discussion | Of conservation concern. Arctostaphylos purissima is known from hills and mesas near the coast (Burton Mesa) in Santa Barbara County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Arctostaphylos densiflora is known only from Vine Hill, Sonoma County. It is the primary source of one of the most widely planted horticultural varieties of the genus (McMinn manzanita). It is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 434. | FNA vol. 8, p. 419. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Name authority | P. V. Wells: Madroño 19: 195. 1968 , | M. S. Baker: Leafl. W. Bot. 1: 31. 1932 , |
Web links |