CISTACEiE. 



233 



7. V. Douglasii Steud. Acaulescent, the cluster of stems sub- 

 terranean and from a rather deep and short caudex-like rootstock; 

 leaves bipinnatiBd with long linear or oblong segments; stipules 

 lanceolate, entire or incised; flowers usually large, on peduncles (2 to 

 3 in. long) equaling or exceeding the leaves; petals about 6 lines 

 long, orange-yellow, the two upper brownish-purple externally, the 

 others purple-veined; lateral ones beardless; capsule 3 or 4 lines long, 

 acute. — (V. chrysantha Hook.) 



Open hillsides in the Coast Ranges from Mendocino, Lake, and 

 Solano Cos. southward. Sierra Nevada, Penn Valley, Jepson. Modoc 

 Co., Baker. Readily recognized by its much dissected leaves. 



8. V. lobata Benth. Pine Violet. Erect, 4 to 14 in. high, 

 the stems naked below; rootstock short, bearing many fleshy-fibrous 

 white roots; leaves 1 to 2 in. long, ovate or almost round in outline, 

 cordate or truncate at base, palmately 3 to 5-cleft or -divided, the 

 lobes entire or somewhat repandly toothed, and the lateral usually 

 larger; inflorescence somewhat umbellate; peduncles 1 to 2 in. long; 

 petals yellow, purple on the outside; valves of the capsule deeply 

 concave-carinate. 



Coast Ranges north of San Francisco Bay, often under Yellow- 

 Pine: Sonoma, Brewer, no. 977; Franz Valley Grade, Jepson; 

 Geysers, McLean; Howell Mountain (lower petal truncate or more 

 commonly acute, always apiculate; lateral petals bearded at base; 

 lower and lateral petals longitudinally purple-lined at base). Mar.- 

 Apr. Var. ixtegrifolia Wats. Leaves of similar outline, crenate 

 or with a few very coarse teeth, but not at all lobed. — Growing with 

 the species on Howell Mountain and otherwise exactly like it in even- 

 feature and detail of flower and habit. 



42. CISTACEyE. Rock-rose Family. 



Low shrubs or (ours) somewhat suftrutescent plants with complete 

 regular hypogynous flowers. Sepals 5, persistent (2 smaller, wholly 

 on the outside and bract-like). Petals 5, ephemeral. Stamens 

 indefinite. Ovary superior, 1-celled with 3 parietal placenta 1 ; style 

 one; ovules orthotropus on slender funiculi. Capsule 3-valved. 



1. HELIANTHEMUM Pers. 



Leaves alternate, simple, entire. Petals yellow, opening but once. 

 Stamens usually numerous, with filiform filaments and short anthers. 

 Style very short or none; stigma capitate, 3-lobed. Capsule 1-celled 

 or nearly 3-celled by the intrusion of the placenta?. (Greek helios, 

 sun, and anthemon, blossom.) 



1. H. scoparium Nutt. Mostly suifrutescent at base, erect, 1 to 2 

 ft. high, corymbosely much branched, glabrous or nearly so; leaves 

 small, narrowly linear, sometimes very few; sepals minutely pubes- 

 cent, sometimes glandular, the inner 2 to 3 lines long, the two outer 

 minute and bract-like; corolla 5 to 7 lines in diameter; placenta 1 

 septiform; embryo slender and much coiled. 



