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Cascade grass-of-parnassus, San Bernardino grass of parnassus

Habit Herbs with caudices.
Stems

15–40 cm.

Leaves

basal in rosettes;

petiole 1–12 cm;

blade (of larger leaves) ovate-orbiculate to elliptic-ovate, 15–60 × 7–50 mm, base cuneate, rounded, or weakly cordate, apex rounded;

cauline usually on middle to distal 1/2 of stem, rarely absent.

Flowers

sepals reflexed in fruit, elliptic or oblong-lanceolate to ovate, 4–7 mm, margins sometimes scarious, to 0.1 mm wide, usually entire, rarely minutely denticulate distally, apex rounded;

petals 5–7-veined, oblanceolate to obovate or elliptic, 8–15 × 3.3–9.8 mm, length 2 times sepals, base cuneate, margins fimbriate proximally;

stamens 6–9 mm;

anthers 1.5–2.2 mm;

staminodes scalelike proximally, distally divided into 5–15 gland-tipped filaments, 3.5–6 mm, shorter than stamens, apical glands globose, 0.2–0.4 mm;

ovary green.

Capsules

10 mm.

Parnassia cirrata

Distribution
from FNA
CA; ID; NV; OR; WA; BC; nw Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Larger petals 3.3–5.2(–7) mm wide, longer fimbriae (3.3–)3.5–6.5 mm; s California.
var. cirrata
1. Larger petals (4–)5–10 mm wide, longer fimbriae 1–3(–3.5) mm; British Columbia, n California, Idaho, Nevada, Oregon, Washington.
var. intermedia
Source FNA vol. 12, p. 115.
Parent taxa Celastraceae > Parnassia
Sibling taxa
P. asarifolia, P. caroliniana, P. fimbriata, P. glauca, P. grandifolia, P. kotzebuei, P. palustris, P. parviflora
Subordinate taxa
P. cirrata var. cirrata, P. cirrata var. intermedia
Name authority Piper: Erythea 7: 128. (1899)
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