234 LEGUMINOSAE 



Note on variation. — Anu'lam-hicr alnifolia is contimunislv tliuuj^h not highly variable as to 

 pubcsciMico and leaf shape. Pubescence of the leaves or lack of it, and pubescence of the sepals 

 are not definitely associated with any other character. The leaf-blades are broad, elliptic or sub- 

 orbicular and serrate at apex or a little below the apex on the sides. Plants otherwise alike may 

 have puberulent (Tahoe, Jcpson 7726) or glabrous (Merced Big Trees, Jcpson lOOe) leaves. 

 The following stations indicate representation of the species in California, with only such varia- 

 tion as may be considered immaterial on edaphic grounds. Sierra Nevada : Parker Creek, Warner 

 Mts., Taylor c)'- Bryant : Forestdalc, sw. Modoc Co., Nutlinij; Mineral, Tehama Co., J. GrinncU ; 

 Bear Valley, Nevada Co., Jcpson 178a; Summit sta., Nevada Co., Jepson 13,870; Mt. Tallac, 

 Jcpson 8129; Kings Canon, Jcpson 774a. Tehachapi Mts., Davidson. Southern California: 

 Palomar Mt., Jcpson 1539. Coast Eanges: Sisson, Siskiyou Co., Jepson 59a; betw. Mud Spr. 

 and Trinity Summit, n. Humboldt Co., Jepson 2031; Cahto, Mendocino Co., Jepson 1868; Ft. 

 Bragg, ir.'C. Mathews 153. 



In the Coast Ranges and southward to Southern California, the leaf -blades tend to have few 

 small teeth at apex or are even sometimes entire (var. suuintegka Jepson comb, n.), though 

 rarely, the teeth may be large or the serrations extend half way to the base. — Glenbrook, w. Lake 

 Co., Jcpson 126c; Plowell Mt., Napa Co., Jcpson 32a; Berkeley, Jepson 5f ; Moraga Ridge, Oak- 

 land Hills, Jcpson 3499 ; Slate's Creek, San Mateo Co., Elmer 4659 ; Priest Valley, se. Monterey 

 Co., Jcpson 2671; upper Nacimiento River, w. Monterey Co., Jepson 1695; lower Rock Creek, 

 San Gabriel Mts., Pcir.ton. This subintegra form also occurs in the low Sierra Nevada foothills: 

 betw. Sheep Ranch and Mountain Ranch, Calaveras Co., Davy 1596. The foregoing specimens of 

 the subintegra form in the totality of characters represent one common but very narrow phase, 

 in spite of the fact that the calyx-lobes may be glabrous externally (Jepson 2671), obviously 

 hairy (Jcpson 32a) or with intermediate states. Such a series, especially as to the calyx, shows 

 the unimportance of pubescence as a basis for segregation. 



In the Sierra Nevada and North Coast Ranges occurs a form (var. siskiyouexsis Jepson 

 comb, n.) with oblong or elliptic leaf -blades serrate usually to the middle or nearly to the obtuse 

 base; they are thin at flowering time, Aveakly puberulent or rarely thinly arachnoid below. — Sierra 

 Nevada: Mineral, Tehama Co., J. Grinnell; Saints Rest, betw. Sonora and Strawberry, A. L. 

 Grant 791; Benson Lake, Tuolumne Co., Jepson 4508; Snow Creek, Yosemite, Jepson 10,490; 

 Sequoia Lake near Millwood, Fresno Co., H. P. Kelley. North Coast Ranges: Quartz Valley, 

 Siskiyou Co., Butler 1238; Mt. St. Helena, Jepson 10,383 ; Howell Mt., Napa Co., Jepson 32b. 



On the desert slopes of the Sierra Nevada and the high mountains of Southern California 

 or in ranges bordering the deserts a shrub is found (var. pallida Jepson) with elliptic leaves pale 

 or glaucous or whitish-pubescent beneath: Hemet Valley, San Jacinto Mts., Peirson 3057; 

 Cushenbury Sprs., n. side San Bernardino Mts., Parish; Icehouse Canon, San Antonio Mts., 

 Peirson 2155; Fandango Pass, Modoc Co., Jepson 7838, In the Panamint Range occurs the var. 

 coviLLEi Jepson with obtuse leaves abruptly acute at the very apex and petals 2i/2 to 3 lines long. 

 Shrubs of the arid or desert slopes whose leaves are prominently veiny on the upper side represent 

 var. VENULOSA Jepson: Julian, e. San Diego Co., T. Brandegee ; Phelan, n. slope San Antonio Mts., 

 Walker Jones; Providence Mts., T. Brandegee; Argus Peak, Inyo Co., Purpus 5376; Convict 

 Creek, Mono Co., Almeda Nor dyke. This last cited phase, var. venulosa, is extremely shadowy. 

 All the phases, as above indicated, are freely supplemented by intergrades representing many 

 indefinite fractional variations. 



Refs. — Amelanchier alnifolia Nutt. Jour. Acad. Phila. 7:22 (1834) ; Jepson, Fl. W. Mid. 

 Cal. 288 (1901), ed. 2, 213 (1911), Man. 509, fig. 508 (1925). Aronia alnifolia Nutt. Gen. 1:306 

 (1818), type loc. "Fort Mandan [N. Dak.] to the northern Andes" [Rocky Mts.], Wyeth. 

 Amelanchier florida Lindl. Bot. Reg. t. 1589 (1833), type from "northwestern America", Douglas. 

 A. glabra Greene, Fl. Fr. 52 (1891), type loc. Donner Lake, Bontc. A. gracilis Hel. Muhl. 2:59 

 (1905), type loc. Shasta Sprs., Siskiyou Co., Heller 7970. A. alnifolia var. typica C. K. Schn. 

 111. Handb. Laubh. 1:739 (1906). Var. subintegra Jepson. A. subintegra Greene, Pitt. 5:109 

 (1903), type loc. Mt. St. Helena, Greene. A. reciirvata Abrams, Bull. Torr. Club 37:151 (1910), 

 type loc. Topa-topa Mts., Ventura Co., Ahrams ^- McGregor 107. Var. siskiyouexsis Jepson. 

 A. siskiyouensis C. K. Schn. 111. Handb. Laubh. 1:735 (1906), type from "mountains of Cali- 

 fornia". Var. pallida Jepson, Man. 509 (1925). A. pallida Greene, Fl. Fr. 53 (1891), "northern 

 and northeastern" California. Var. covillei Jepson, Man. 510 (1925). A. covillei StanH. Proe. 

 Biol. Soc. Wash. 27:198 (1914), type loc. Cottonwood Caiion, Panamint Range, Coville 4- Funston 

 962. Var, venulosa Jepson, Man. 510 (1925). A. venulosa Greene, Pitt. 4:21 (1899), type loc, 

 Cushenbury Sprs., Parish. 



LEGUMINOSAE. Pea Family 



Herbs, shrubs, or trees. Leaves alternate, stipulate, usually compound. Leaf- 

 lets 1 to many, usually entire. Calyx synsepalous, 5-toothed or -cleft (or in Lupi- 

 nus 2-lipped), mostly persistent. Corolla with 5 petals, regular or somewhat 

 irregular or in ours commonly papilionaceous, that is, highly irregular and butter- 

 fly-like : the upper petal is called the banner ; the lateral petals are called the wings ; 



