CISTACEAE 515 



Eefs. — FouQUiERiA SPLENDENS Engelm. ; "Wisliz. Mem. Tour n. Mex. 98 (1848), type loc. 

 Jornado del Muerto, N. Mex., Wislizenius ; Jepson, Man. 641, fig, 633 (1925). 



CISTACEAE. Rock-rose Family 



Low shrubs but ours herb-like or woody only at base. Flowers complete, regu- 

 lar, hypogynous. Sepals 5, persistent (2 smaller, wholly on the outside and bract- 

 like). Petals 5, ephemeral. Stamens indefinite. Ovary superior, 1-celled with 3 

 parietal placentae ; style one ; o"vailes orthotropous on slender funiculi. Capsule 

 3-valved. — Genera 4, species 153, mostly north temperate (especially Mediter- 

 ranean) but all continents save Australia. 



Bibliog. — Gray, A., Cistaceae in Syn. Fl. P: 189-194, — 1895. Grosser, W., Cistaceae in 

 Engler, Pflzr. 41"^: 1-161, figs. 1-22,-1903. 



1. HELIANTHEMUM Mill. 



Leaves alternate, their blades simple, entire. Flowers yellow, opening but 

 once. Stamens usually numerous, with filiform filaments and short anthers. Style 

 very short or none; stigma capitate, 3-lobed. Capsule 1-celled or nearly 3-celled 

 by the intrusion of the placentae. — Species about 120, North and South America 

 but mostly Mediterranean. (Greek helios, sun, and anthemon, blossom.) 



Flowers in a panicle or raceme; herbage pubescent or glabrate 1. E. scoparium. 



Flowers corymbose; herbage woolly; Santa Cruz Isl 2. H. greenei. 



1, H. scoparmm Nutt. Eush-Rose. Stems numerous, tufted, erect, very 

 leafy, 8 to 20 inches high, arising from a much-branched woody crown and ending 

 above in a small leafy panicle or short raceme ; herbage and calyx minutely stellate- 

 pubescent or glabrate; leaf -blades narrowly linear, I/2 to 1^/4 inches long, early 

 deciduous; inner sepals 2 to 3 lines long, the two outer minute; corolla 5 to 7 lines 

 broad; petals obovate; stamens 8 to 24; placentae partition-like; embrj'o slender 

 and much coiled. 



Sandy flats or beaches, 5 to 100 feet : along the middle California coast from 

 Mendocino Co. to Santa Barbara Co. Apr.-May. 



Locs. — Ft. Bragg, W. C. Mathews; Monterey, Jepson 5703, 9773; Surf, K. Brandegee. 

 This coastal state passes into the prevailing form, the next variety. 



Var. vulgare Jepson. Stems rush-like, the leaves sparse or deciduous; herbage pubescent 

 or glabrate, rarely canescent ; calyx usually smaller ; raceme or panicle naked. — Dry sunny slopes 

 and ridges of the chaparral belt, 300 to 4000 feet: Coast Eanges from Lake Co. to San LuiS 

 Obispo Co.; Sierra Nevada from Eldorado Co. to Mariposa Co.; Santa Barbara Co. to San Diego 

 Co. South to Lower California. 



Locs. — Coast Eanges: Lake Co.; Mt. Tamalpais, Jepson; Moraga Pass, Oakland HUls, 

 Davy; Los Gatos, Heller 7350; Santa Lucia Mts., Vortriede; Arroyo Grande, Alice King. Sierra 

 Nevada: Sweetwater Creek, Eldorado Co., E. Brandegee ; Burson, Calaveras Co., Jepson 9955; 

 betw. Colfax Sprs. and Crockers sta., Yosemite road, H. M. Evans; Coulterville, Mariposa Co. 

 S. Cal.: Pelican Bay, Santa Cruz Isl., Jepson 12,093; San Marcos Pass, Santa Inez Mts., Jepson 

 12,138; Santa Susanna Pass, Jepson 8469; Glendora, E. D. Palmer; Mt. Lowe foothills, Peirson 

 115 ; Waterman Canon, San Bernardino Mts., Jepson 5558 ; Jurupa Hills, Eiverside, C. M. Wilder; 

 Eamona, K. Brandegee ; San Felipe, Parish 290; San Diego, Mary Spencer 74. 



Field note. — ^Well developed plants grow on the low hills about Burson in Calaveras Co. 

 The very bushy individuals vary from 1 to 4 feet broad and 14 to 20 inches high. These plants 

 are very floriferous, the larger individuals bearing over 200,000 flowers and buds. 



Var. aldersonii Munz. Inflorescence extremely open; petals fan-shaped, 4 lines long. — 

 San Diego Co. : Dulzura, Abrams 3749 ; Eamona, K. Brandegee ; e. of San Diego, Mary Spencer 73. 



Eefs. — HELIANTHEMUM SCOPARIUM Nutt. ; T. & G. Fl. 1:152 (1838), type loc. Monterey, 

 Nuttall; Jepson, Fl. W. Mid. Cal. 233 (1901), ed. 2, 265 (1911), Man. 641, fig. 634 (1925). 

 Halimium scoparmm Gross.; Engler, Pflzr. 4"^: 35, fig. 9A-D (1903). Crocanthemum scoparium 

 Millsp. Field Mus. Nat. Hist. Bot. 5:175 (1923). Helianthemum mendocinensis Eastw.; Engler, 

 Pflzr. 41^^:35 (1903), as synonym. Var. vulgare Jepson, Man. 641 (1925), type loc. CoultervUle, 

 Jepson 13,953. Var. aldersonii Munz, Man. S. Cal. Bot. 316 (1935). Helianthemum aldersonii 

 Greene, Erythea 1:259 (1893), type loc. San Diego Co., Alderson (probably near "Witch Creek). 



