498 



MALVACEAE 



Locs. — El Monte ranch road, Monterey, Hall 10,084; betw. King City and Jolon, Eastwood; 

 Cambria, San Luis Obispo Co., Winifred Davis. 



Kefs. — SpnAERALCEA PALMERi Jcpsou, Man. 633 (1925). Malvastrum palmeri Wats. Proc. 

 Am. Acad. 12:250 (1877), type loc. Cambria, San Luis Obispo Co., Palmer 50. Malacothamnus 

 palmeri Greene, Lflts. 1:208 (1906). Malvastrum involucratum Rob.; Gray, Sjti. F1. 1^:310 

 (1S97), type loc. Jolon, Monterey Co., T. Brandcgee (leaves glabrous on upper surfaces, flowers 

 10 lines long). 



5. S. densiflora Jepson. San Jacinto INIallow. Stems erect, woody below, 

 2 to 4 feet high; herbage finely stellate-tomentosej leaf -blades orbicular-cordate, 

 dentate, not lobed or often 3-lobed, 1 to 1% 



inches wide, the petioles 3 to 11 lines long; 

 flowers in dense sessile heads (often appear- 

 ing as if in whorls), forming an interrupted 

 naked or leafy spike ; bractlets conspicuous, 

 filiform, densely hispid, 5 to 6 lines long; 

 calyx hirsute-stellate, often papery-white in 

 age, its lobes lanceolate, acuminate, 4 lines 

 long ; petals rose-red, 6 to 8 lines long. 



Valleys and canons, 1000 to 4100 feet : San 

 Jacinto Mts. ; Santa Ana Mts. ; eastern San 

 Diego Co. South to Lower California. May- 

 June. 



Locs. — Santiago Peak, Santa Ana Mts., Mum 

 7099; San Juan Capistrano, Nevin; Dripping Spr., 

 Temecula Creek, Muns 10,427; Menifee, Alice King ; 

 Palm Canon of San Jacinto, Jepson 1387; Witch 

 Creek, San Diego Co., Alderson 418; Alpine sta., San 

 Diego Co., Parish 4427. 



Var. viscida Jepson comb. n. Calyx-segments 

 1% to 31/4 lines long; bractlets 2 to 3 lines long. — 

 Chaparral slopes, 1000 to 2000 feet: San Diego Co. 

 (Eamona, K. Brandegee ; Tecate, 13 mi. se., Muns 

 9506). 



Var. gabrielensis Jepson comb. n. Stipules elon- 

 gate ; flowers in glomerules in the upper axils ; bract- 

 lets 3% to 6 lines long; calyx-lobes ovate, subulate- 

 attenuate, 4 to 5 lines long, in bud forming a slender 

 beak; petals 8 to 9 lines long. — Mountains on west 

 side of the Mohave Desert, 2400 to 3100 feet; Mt. 

 Hamilton Eange. 



Locs. — Eavenna, K. Brandegee ; Arrastre Creek, n. side San Gabriel Mts.; Mt. Pinos (Bull. 

 S. Cal. Acad. 24:86) ; mts. s. of Livermore, Curran. 



Eefs. — SPHAERAiiCEA DENSIFLORA Jcpson, Man. 633 (1925). Malvastrum densiflorum Wats. 

 Proc. Am. Acad. 17:368 (1882), type loc. Agua Caliente (Palm Sprs.), San Jacinto Mts., S. B. 

 4r TV. F. Parish. Malacothamnus densiflorus Greene, Lflts. 1:208 (1906). Malvastrum densi- 

 florum var. typicum Estes, Bull. S. Cal. Acad. 24:85 (1925). Var. viscida Jepson. Malvastrum 

 viscidum Abrams, Bull. Torr. Club 34:264 (1907), type loc. El Nido, San Diego Co., Abrams 

 3528. M. densiflorum var. viscidum Estes, Bull. S. Cal. Acad. 24:85 (1925). Var. gabrielensis 

 Jepson. Malvastrum gahrielense M. & J. Bull. Torr. Club 52:223 (1925), type loc. Arrastre 

 Creek, n. side San Gabriel Mts., Peirson 774. 



6. S. aboriginum Jepson comb. n. Indian Mallow. (Fig. 240.) Stems with 

 a dense white felt; leaf -blades broadly ovate, 3 to 5-lobed, crenate-dentate, cordate 

 at base with a shallow and narrow sinus, obtuse at apex, I14 inches long, somewhat 

 broader, rugulose above, scarcely paler beneath; petioles nearly as long; flowers 

 sessile and glomerate, forming an elongated flexuous almost naked interrupted in- 

 florescence ; bractlets 3, ovate, 4 to 5 lines long, 3 to 3I/2 lines wide, sometimes 

 slightly connate at base; calyx plicate-angled, its lobes broader than long, ab- 

 ruptly acuminate; carpels (ex original character) about 8. 



Dry hills, 700 to 1400 feet: middle South Coast Range in San Benito and 

 Monterey counties. June. 



Fig. 240. Sphaeralcea aboriginum 

 Jepson. a, flowering branch, X V-i ; 6> 

 basal leaf, X % ; 0, long. sect, of fl., X 

 % ; d, cross sect, of calyx in bud, X 1% ; 

 e, nutlet, X 5. 



