MORNING-GLORY FAMILY 



121 



to 1 inch long and as broad as long, the basal lobes usually toothed; petioles, except 

 basal ones, usually but not always shorter than the blades; peduncles 1-flowered, 

 short on the trailing branches, long ones at base, often flexuous or curved, especially 

 in age; involucral bracts enclosing the calyx, triangular-ovate, 6 lines long; corolla 

 funnelform, 1 to 1^/2 inches long, cream-color. 



Gravellj' soil, open hill and mountain slopes, 1000 to 6500 feet : Coast Ranges 

 from Siskiyou Co. to San Luis Obispo Co.; northern Ventura Co.; Sierra Nevada 

 at somewhat middle altitudes from Shasta Co. to Tulare Co. Apr. -July. It is ab- 

 sent (or at least not reported) from the outer Coa.st Range. 



Locs. — Trailing Coast Eange form: Sisson, Jepson 14,525; Dorleska, Trinity Co., Hall 8670; 

 Mt. Diablo, Greene; Jolon, K. Brandegee ; Paso Eobles, Barber; Santa Margarita Valley, Sum- 

 mers 602. Low tufted inner Coast Range form (C coHinus Greene) : Indian Valley (mts. e.), ne. 

 Lake Co., Jepson 8980; Mt. St. Helena, Jepson 10,381; Knoxville, Napa Co., C. F. Baker 2968; 

 Howell Mt., Napa Eange, Jepson 18,841 ; Fitzsimmon's grade, Sonoma Co., M. S. Baker ; Mitchell 

 Valley, s. San Benito Co., Jepson 12,212. Ventura Co. (tufted form) : Seymour Creek, Mt. Pinos, 

 Peirson 3555. Sierra Nevada (trailing form) : Meadow Valley, Plumas Co., Jepson 10,636; Blue 

 Canon, Placer Co., H. A. Walker 1211 ; Fortman Mt., Mariposa Co., Congdon; South Fork Middle 

 Tule River, Jepson 4879. 



Leaf variation. — Something of habit variation in Convolvulus malacophyllus Greene is indi- 

 cated by the preceding locality citations. Variation in the size and more particularly the shape 

 of the leaf is very marked and runs to striking extremes. No two collections, scarcely, have quite 

 the same leaf pattern throughout. A common form is the broadly cordate leaf with flowing out- 

 line; in other collections or even in the same collection the broadly cordate leaf possesses a lance- 

 olate apex with spreading lateral lobes which are entire or toothed. In this type of leaf, as seen 

 in a series of collections, the body gradually narrows, the lobations become deeper and finally we 

 have the "three-fingered" type as seen in plants from the Santa Lucia Mts., Mt. St. Helena and 

 eastern Mendocino County (the latter being C. tridactylosus Eastw.). Such a series as here de- 

 scribed is illustrated in fig. 363. It has no geographic significance as at present understood. The 

 bracts in the form Convolvulus tridactylosus are narrower than is usual in Convolvulus mala- 

 cophyllus, corresponding, one may say, to the narrower leaves. 



Fig. 363. CoNVOLVTiLus MALACOPHTLLTJS Greene. A series of leaf forms from collections at 

 selected localities throughout the range of the species, a, b, X % (Seymour Creek, Ventura Co., 

 Munz 6964) ; c, X %, and d, X Vi (Dunsmuir, Hall # Babcock 4034) : e, X Vg, and /, X % (s. of 

 Lebee, Ventura Co., Jones) ; ^, X % (South Fork Middle Tule Eiver, Jepson 4879) ; ft, t, X % 

 (Meadow Valley, Plumas Co., Jepson 10,636); j, X % (Paso Robles, Barber); k, X %, and 

 I, X Vi (Bryson, Monterey Co., Ferris 8461) ; m, X Vs (Mitchell Valley, San Benito Co., Jepson 

 12,212) ; n, X Va, and o, X Vj (Seymour Creek, Mt. Pinos, Peirson 3555) ; p, X Vs (Mt. St. Helena, 

 Jepson 10,381) ; q, X Vx (Santa Lucia Mts., K. Brandegee) ; r, X Vx, and s, X % (Covelo, Men- 

 docino Co., Eastwood 15,202). These collections in the sum total of their essential features are 

 believed to be alike save in leaf form. Since diverse leaf forms in this group are often found in 

 one collection or even on one individual, or in other cases represent negligible degrees of differ- 

 ence, it is thought that such leaf forms cannot well be used to support segregated specific units. 



Var. pedlcellata Jepson comb. n. Trailing; leaf -blades narrowly lanceolate, acuminate; 

 flowers on pedicels 1 to 2% inches long. — South coast: Santa Lucia Mts., K. Brandegee ; Sisquoc, 

 Santa Barbara Co., M. S. Baker 12 ; Santa Paula. 



Refs. — Convolvulus malacophyllus Greene, Pitt. 3:326 (1898), type loc. "middle Sierra 

 Nevada." Calystegia villosa Kell., Proc. Cal. Acad. 5:17 (1873), type loc. Cisco, Placer Co., 

 Kellogg, Brannan; not Convolvulus villosus Pcr3.(1805). Convolvulus vUlosus Gray, Proc. Am. 



