VITACEAE 481 



rounded by but mostly free from the persistent cup-like calyx. — Species 2, Cali- 

 fornia and Mexico. (Adolphe T. Brongniart, 1801-1876, French botanist who 

 monographed the family Rhamnaceae.) 



1. A. calif ornica Wats. Two to 3 feet high; branchlets short, thorn-like, 

 divaricately spreading; younger parts finely pubescent; leaf -blades oblong or 

 obovate, entire or nearly so, 1 to 3 lines long, shortly petioled; flowers 1 to 4 in a 

 cluster, the pedicels 1 line long or in fruit 3 to 4 lines long; calyx greenish-white; 

 petals minute, white; disk dull green; capsule 2 to 3 lines broad; seeds smooth, 2 

 lines long. 



Dry hills and flats, 75 to 2000 feet : western San Diego Co. South to Lower 

 California. Feb.-Mar. 



Locs. — San Diego, R. W. Sumner; Chollas Valley, Orcutt ; Penasquitas ranch, Parish 4432; 

 Sweetwater Dam, Geo. B. Grant 1237. 



Eefs. — Adolphia califoknica Wats. Proc. Am. Acad. 11:126 (1876), type loc. Soledad and 

 Chollas Valley, near San Diego, Parry, Cleveland; Jepson, Man. 625, fig. 624 (1925). 



VITACEAE. Vine Family 



Woody plants, mostly climbing by tendrils. Leaves in ours simple, alternate. 

 Flowers small, regular, greenish or whitish, in a compound thyrse. Calyx minute, 

 the limb mostly obsolete and truncate. Petals 5 (4 or 6), valvate, caducous or 

 early deciduous, the stamens as many and opposite them. Fruit a 2-celled berry. 

 Seeds with a thick and bony testa. Embryo minute, in a tough endosperm. — 

 Genera 11, species 600, all continents, chiefly tropical. 



Bibliog. — Engelmann, Geo., True grape-vines of the U. S. (Collected Works, 414-426, — 

 1887). Adkinson, J., Some features of the anatomy of the Vitaceae (Ann. Bot. 27:133, — 1913). 



1. VITIS L. Grape 

 Leaves opposite the tendrils or flower clusters. Tendrils at least once branched. 

 Calyx-tube filled with the disk, which bears the stamens and petals. O^niles 2 in 

 each cell. — Species 28, all continents but chiefly north temperate and subtropical. 

 (Classical Latin name.) 



Young shoots and young leaves mostly green, only thinly arachnoid-tomentose or pubescent; 



berries purple, very glaucous 1. V. calif ornica. 



Young shoots and young leaves densely white-tomentose ; berries black, only slightly glaucous 



2. V. girdiana. 



1. V. calif ornica Benth. California Grape. Stems 5 to 80 feet long; leaf- 

 blades roundish, pubescent or thinly arachnoid-tomentose, especially beneath, the 

 tomentum in age flocculent, 2 to 8 inches broad, coarsely or minutely dentate, 

 cordate at base with open or closed sinus, slightly or not at all lobed, or sometimes 

 a 3 to 5-lobed leaf with narrow sinuses at the next node above or below an unlobed 

 one; petals and stamens 5; fruit purple, with a bloom, 3 to 5 lines in diameter. 



Along streams in valleys and canons, 5 to 3700 feet : Coast Kanges from Siski- 

 you Co. to San Luis Obispo Co.; Great Valley; Sierra Nevada foothills from Shasta 

 Co. to Kern Co. North to the Umpqua Valley, Oregon. May-June. 



Habital note. — This vine climbs oaks or other trees and shrubs to the height of 10 to 80 

 feet or more. In some cases its foliage may so completely enshroud the crown as to kill the 

 supporting tree. While usually climbing trees, Vitis californica is sometimes found on bare 

 flats where it forms trailing vines 8 to 15 feet long. In some such places the arboreous growth 

 has been destroyed by fire while the vines have persisted. (Cf. Jepson, Silva 416, pi. 66, — 1910.) 



Locs. — Coast Eanges: Shasta Eiver near mouth, Butler 1029; betw. Dunsmuir and Castle 

 Eock sta., Jepson; Kennett, Shasta Co., Jepson; Bluff Creek, Klamath Eiver, n. Humboldt Co., 

 Tracy 6109 ; DeVoy Flat, South Fork Eel Eiver, Humboldt Co., Jepson 9463 ; Grindstone Creek, 

 w. Glenn Co., Jepson 16,310; Cummings, n. Mendocino Co., Davy 5302; Longvale, Mendocino Co., 

 Jepson; South Mill Creek, Ukiah, Jepson 2414; Hough Sprs., ne. Lake Co., Jepson; Scott Valley, 

 Lake Co., Jepson; St. Helena, Jepson 9841; Miller Canon, Vaca Mts., Jepson 13,936; Mitchell 

 Canon, Mt. Diablo, Jepson; Niles, Jepson; Aquarius Spr., Mt. Hamilton, Jepson; San Luis 

 Obispo, Miles. Great Valley: Crane Creek, w. Tehama Co., Jepson; Princeton, Colusa Co., Davy 



