MORNING-GLORY FAMILY 119 



776 (1925), in part. Var. binghamiae Jepson. C. binghamiae Greene, Bull. Cal. Acad. 2:417 

 (1887), type loc. "in marshy places about Burton's Mound, in the city of Santa Barbara," B. F. 

 Bingham. 



3. C. macrostegius Greene. Island Morning-glory. Suffruteseent with ■wiry- 

 trailing stems 6 to 15 feet long; herbage glabrous throughout; leaf-blades broadly 

 triangular, hastate, 1 to 2 or S^^ inches long, rather longer than or about equaling 

 the petioles; peduncles 3 to 13 inches long, 1 to 5-flowered, subcymose ; buds enclosed 

 in a pair of large membranous mucronate pinkish-tinged bracts i/2 to 34 inch long, 

 the lateral flowers each similarlj' bracted within the outer bracts; corolla white, 

 fading pinkish in drying, 11/2 to 2 inches long. 



Hill slopes, 5 to 1500 feet: islands off the coast of Southern and Lower Califor- 

 nia. Apr.-Aug. 



Logs. — S. CaL: Pelican Bay, Santa Cruz Isl., Jepson 12,053; San Clemente Isl., T. Brande- 

 gee : Santa Barbara Isl., Abrams 4- Wiggins 296 ; Anacapa Isl., J. T. Howell 3800. L. Cal. : Gua- 

 dalupe Isl., Franceschi. 



Refs. — CoirvoLVULUS macrostegius Greene, Bull. Cal. Acad. 1:208 (1885), type loc. Guada- 

 lupe Isl., E. Palmer; T. Brandegee, Zee 1:85 (1890). C. occidentalis Wats., Proc. Am. Acad. 

 11:118 (1876), not Gray. C. occidentalis var. macrostegius Munz, Man. 387 (1935). 



4. C. occidentalis Gray. Chapaebal Morning-glory. Stems freely twining, 

 1 to 4 feet long; herbage glabrous or nearly so; leaf -blades very variable in shape, 

 % to lYo inches long, about twice a.s long as the slender petiole, usually triangular- 

 ovate, acuminate at apex and cordate-sagittate to hastate at base, the basal lobes 

 often 1 or 2-toothed; peduncles elongated, 2 to 3 or 4 inches long, greatly surpassing 

 the leaves, 1 or less commonly 2 or 3-flowered; involucral bracts long-ovate, acu- 

 minate, 1/2 to % inch long; corolla white or cream, pinkish on the outside, 1/2 to 

 11/4 inches long and about as broad. 



Caiion bottoms or clearings in chaparral, 20 to 2000 feet : coastal Southern Cali- 

 fornia. Often climbing over shrubs or brush. Mar. -June. 



Locs. — Simi Valley, Ventura Co., Jepson 8468; Laurel Caiion, Santa Monica Mts., comm. 

 E. D. Palmer; Rubio Canon, San Gabriel Mts., Peirson 151 ; San Bernardino, Jepson 5531 ; New- 

 port Bay, Booth 1081; Santiago Creek, Santa Ana Mts., Alice King; Oceanside, Parish 4447; 

 San Diego, Jepson 6671. 



Var. tenuissimus Gray. Leaf -blades very narrow, lanceolate-sagittate ; peduncles 1 or 2-flow- 

 ered ; bracts 4 to 6 lines long, barely if at all exceeding the calyx ; corolla averaging smaller than 

 in the species. — Arid hillsides, coastal Southern California : San Bernardino VaUey, Parish 11,308 ; 

 San Jacinto, Beinhardt; Temeseal Wash, Riverside Co., Jepson 1559; Escondido, C. V. Meyer 

 251; Tecate, Orcutt 1118; Witch Creek, San Diego Co., Alderson. 



Var. cyclostegius (House) Jepson. Peduncles stout; bracts orbicular, mucronulate, pur- 

 plisli, more or less ciliate at tip. — Coastal form, Monterey Co. to San Diego Co. : Monterey, Jepson 

 14,505; Lime KUn Creek, Santa Lucia Mts., Jepson 1682; Pismo, Jepson 8442; Arroj-o Grande, 

 Alice King; San Miguelito Creek, Lompoc, Ewan 7904; Canada del Capitan, Santa Barbara Co., 

 Jepson 11,912 ; Sycamore Caiion, Santa Inez Mts., Jepson 9148 ; Simi, Ventura Co., Jepson 11,902 ; 

 Del Mar, Jepson 1605a. 



Refs. — Convolvulus occii)ENTALIS Gray, Proc. Am. Acad. 11:89 (1876), "western part of 

 Cal., on and near the coast"; Jepson, Man. 776 (1925). C. ari*(s Greene, Pitt. 3:330 (1898), type 

 loc. desert foothills of S. Cal., Parish. Var. tenuissimus Gray, Proc. Am. Acad. I.e., type loc. 

 Santa Barbara, Nuttall; Jepson, Man. 776 (1925). C. occidentalis var. angustissimus Gray, Bot. 

 Cal. 1:533 (1876), type loc. Santa Barbara, Nuttall. C. nuttallii Greene, I.e. C. greenci House, 

 Muhl. 4:54 (1908). Var. cyclostegius Jepson, Man. 776 (1925). C. cyclostegius House, Muhl. 

 4:53 (1908), type loc. Carmel road near Monterey, Heller 6827. 



5. C. atriplicifolius House. Oregon Morning-glory. Low, the stems 4 to 13 

 inches long, arising from a fleshy slender rhizome; herbage glabrous; leaf -blades 

 broadly triangular-hastate, 1 to 21/2 inches long and about as broad, acute at apex 

 and with a hastate lobe diverging at right angles on either side of the cuneately 

 tapering or truncate base; hastate lobes small, mostly entire; flowers few, in the 

 axils of the lower leaves; peduncles % to 11/2 inches long, about equaling the peti- 

 oles; involucral bracts green, oval, obtuse or almost truncate, about 6 lines long, 



