SAXIFRAGE FAMILY 



135 



pedicels, thinly soft-hairy; petals narrowly oblong, curving, rather shorter than 

 the calyx. 



Sloping banks of streams or faces of cliffs, often growing in rock crevices with 

 ferns and mosses : near the coast, 100 to 1500 feet, from Santa Cruz Co. to Humboldt 

 Co.; Sierra Nevada, 2200 to 

 7000 feet, from Tulare Co. to 

 Butte Co. and n. to Siskiyou 

 Co. North to Washington. 

 May 15- July. 



Logs. — Coast Ranges : Santa 

 Cruz Co. (Anderson, Nat. Hist. 

 Santa Cruz Co. 37) ; Berkeley, Jep- 

 son 10,019; Mt. Diablo, Jepson 

 9649; Mt. Tamalpais, Jepson; How- 

 ell Mt., Jepson; Redwood belt, Hum- 

 boldt Co., Chandler 1231. Sierra Ne- 

 vada: Middle Tule River, Purpus 

 5037; Cedar Creek, Sequoia Park, 

 Hopping 153; Huntington Lake, 

 A. L. Grant 1035 ; Vernal Fall, Yo- 

 semite, Jepson 13,459; Rosasco, 

 Reed Creek, Middle Fork Tuolumne 

 River, Chesnut ^ Drew ; Italian Bar, 

 Stanislaus River, A. L. Grant; Sly 

 Park, Eldorado Co.; Little Chico 

 Canon, Butte Co., E. M. Austin; 

 Sisson, Siskiyou Co., Heller 80G0. 



Var. hartwegii Ros. Scape 

 with few reduced leaves; branches 

 of the panicle remote, ^/^ to 1% 

 inches long, terminating in rather 

 close clusters of flowers ; calyx bowl- 

 shaped or broadly turbinate, hairy, 

 1 to 1% lines long, the lobes as long 

 as the tube; petals exceeding the 

 calyx-lobes. — Shady places, 20 to 

 500 feet: Monterey coast line from 

 Monterey to Point Sur. May-June. 

 This form, a very narrow endemic, 

 is but slightly known. The styles in 

 our material (Little Sur River, 

 Davy 7312) are very short. Full 

 material is much needed and should 

 be collected with reference to the 

 possible existence of sexual differ- 

 entiation in the flowers. The styles 

 appear to be shorter than the calyx- 

 lobes, but observations should be 

 made on mature flowers. 



Refs.— Heuchera micrantha Dougl. Bot. Reg. t. 1302 (1829), type loc. Grand Rapids, 

 Columbia River, Douglas; Jepson, Fl. W. Mid. Cal. 271 (1901), ed. 2, 200 (1911), Man. 463, fig. 

 456 (1925). Var. erubescens Ros.; Engler, Bot. Jahrb. 37=: beibl, 83:77 (1905). H. erubescens 

 Braun & Bouche, Ind. Sem. Hort. Berol. App. 2 (1871). Var. hartwegii Ros.; Engler, I.e. 

 H. pilosissima var. hartwegii Wats.; Wheelock, Bull. Torr. Club 17:195 (1890), type loc. Mon- 

 terey, Hartweg 1742. H. pilosissima Benth. PI. Hartw. 311 (1849), not F. & M. H. hartwegii 

 Rydb. N. Am. Fl. 22:102 (1905). 



Heuchera longipetala DC. Prod. 4:52 (1830), Moc. & Ses. Calq. des Dessins, t. 423 (1874), 

 is doubtful but may be Heuchera micrantha Dougl. The detail of the calyx in the drawing suggests 

 Tolmiea menziesii T. & G. The drawing was made from a plant collected at Nootka by Mocmo, 

 who was on Vancouver Island in 1792. 



Fig. 152. Heuchera micrantha Dougl. a, habit, X 

 6, branch of infl., X ^^ ; c, fl., X 6; d, long. sect, of fl., 

 X 6; e, capsule, X 3i/^; /, seed, X 12. 



4. H. maxima Greene. Jill-o'-the-rocks. Plants with the habit and aspect 

 of H. micrantha ; leaf -blades roundish-cordate, rather markedly lobed, 1^/2 to 6% 



