Malvastrum. MALVACKJ:. 311 



M.* aboriginum, Kouinson, n. !«i». Hhhk hes cnvinil witli a Hoft whiu< fi-lt<<l loiiiinttiiii : 

 leaves l)ri>;iilly uvatc, rordate witli a shallow ati<l narrow fiiiiiH, olttum*. •'i-5-lolie<| aii<i cn-tiatc- 

 dentate, ineli ami a half in lenj^th, somewhat i>roailer, ruj;tiloi.eal>»jve,Manelyimler bt-neatli, 

 borne on petioles of nearly their own lerif^th : (lowers sessile, gluinerute in the U|)|ier axiU 

 and above forminj; elongated Hexuous almost naked interrujited terminal inrtorem-c*nce« : 

 bractlets of the involiuel ."J, ovate, 4 to 5 lines in li-ngth, '\ to :\\ lines in breadth, s^iinetinieH 

 slightly connate at the base: ealyx short and strongly iilicate-angbd, ('aneM■lMlt-^•mentll• 

 lose; segments broader than long, abrujitly acuminate : carjnds about H. — Indian Valb-y. 

 California, Mrs. M. K. Currun, June, 1885 (herl). Calif. Acad. Sci.). Well chara<teri/.e<l 

 among American species by its broad bractlets, which, however, occur in Wiine Sjuth Afri- 

 can congeners. 



4— -)— -I— H— Herbage and calyx densely stellate-tomentoso ; no hirsute haim : involuc<>nat« 

 bractlets more naked, filiform, rather deciduous : carjtels oval with e.\ci»c<l insertion, thin- 

 walled, at length smooth, pnjmptly 2-valved : leaves rounded, obscurely lobcd, rather short- 

 petioled, thickish : stems robust, 2 or 3 or even 6 to 8 feet high. 



M. marrubioides, Durand & Hiluard. Suffruticose ? 2 or 3 feet high, ronghish with 

 sliort-rayed tomeutose pubescence : leaves broadly ovate, rarely suln-onlate, irregularly 

 and often sharply dentate, inch or two long, or uppermost smaller: flowers sulwessile in 

 short subsessile axillary clusters: calyx-lolies long-attenuate or caudate-acuminate from 

 an ovate base, at length half inch long : petals over half inch long, ro.xe-color. — Jour. Acad. 

 Philad. ser. 2, iii. 38, & Pacif. R. Kep. v. 6, t. 2 ; Brew. & Wats. Hot. Calif, i. 8.-) ; (Jray. 

 Proc. Am. Acad. xxii. 290. M.foliosum, Wats. ibid. xx. 356.' — California, near Millerton 

 on the upper San Joaquin, Ileermann ; also Santo Thomas, northern borders of I><jwer Cali- 

 fornia, Orrutt, 1S84. 



Var. paniculatum, Gray, 1. c. Less canescent : flowers copious in loo.«*e somctimefl 

 slender-pedunculate panicles, some rather slender-pedicellate. — Nortiicrn jtart of Lower 

 California, at All Saints' Bay, Orcult, 1886. 



M.* Fremontii, Tokr.^ Shrubby below, 4 to 8 feet high, densely soft-toment. M^e with 

 longer-raved stellular pubescence: leaves pentagonal or roundish, shallowly or scarcely at 

 all cordate, crenate-toothed, the larger 3 inches broad : flowers in axillary-sessile or short- 

 pedunculate clusters, at summit of stem interrupted-spicate : calyx densely lanate-toment«.«m, 

 the short triangular acute lobes 2 to 2^ lines long, nuu-ronate with a more naked tip: 

 "flowers rose-scented; petals rose-color," hardly half inch long. — Torr. in tJray. I'l. Fendl. 

 21.8 Spha:ra/cea Lindheimeri, Brew. & Wats. Bot. Calif, i. 86, as to Calif, jd , not (Jray, the 

 resemblance superficial. — Mountains of California, from San Bernardino Co., Parish, to 

 Calaveras Co., Rdltnn ; first coll. by Fremont, next by Brewfr. 



Var.* cercophorum, Kouinson, n. var. Calyx much longer, 7 to 8 lines in length ; 

 the lance-linear divisions caudate-attenuate, equalling or nearly equalling the petals.— 

 Arrovo del Valle, Alameda Co., California, coll. P»o/. E. L. Greene, 14 June, 1895 (herb. 

 Tniv' of Calif.). 



M.* arcuatum, Robinson, n. comb. Shrub with long subsimple terete branches covered 

 with a dense white felted tomentum : leaves ovate, petiolate, ol)tu.se or rounded at the Imisc, 

 deeply crenate but scarcely or not at all lol)ed, thickish and very rugose, sihju gn'en above 

 but densely canescent-tomentose beneath : flowers .«essile in the u|)per axils and forming at 

 the ends of the branches long interruptedly spicate unilateral inflorescences ; liractlets linenr- 

 filiform, equalling the calyx : this soft tomentose but l>y no means so densely w.ndly as in the 

 hist preceding species : petals roseate, three fourths inch long: young carjnds denwdy tomen- 

 tose. — Malveopsis arcuutn, Greene, Man. Hay-Reg. 66. Muhnstruiit tiKirnihioidrf, (;n>enc. 

 Fl. Francis. 109, not Dur. & Hilg. — California, "eastern .slopes of the Coast Range back of 

 Belmont." A species to be recognized by its ])eculiar very rugose ovate not |)entagonal 

 leaves. 



1 Add syn. ^falveop»is tnavrubioirlfS, Kuntze. 1. c. 



2 The description of this species has been .xlightly modilied to exclude more clearly (he next (>'\- 

 lowing. 



3 Add syn. Afalvcopfis /■'nmnnli, Greene, Erythea. i. 171. 



