140 SAXIFRAQACEAE 



Geog. note. — In the Sierra Nevada the shrubs have the leaves commonly entire or subentire 

 and plabrous or only Bliphtly pubescent. This form re])resents the var. californieus Gray. In the 

 Coast Ranpcs the loavos tend to he more markedly dentate and more evidently hairy. This is the 

 var. pordonianus Jepson. There are, however, intermediate forms, especially in Siskiyou Co., 

 with entire pubescent leaves: Yreka, Butler 405; Quartz Valley, Shackelford Creek, Butler 87. 

 The leaves (2 to 5 inches long) of sterile shoots of var. gordonianus are markedly hairy in all 

 specimens before us, as well as more conspicuously dentate than the leaves of the fertile shoots; 

 in some specimens the under side of the lower leaves of a fertile shoot are hairy, the under side 

 of the upper pair subplabrous (Sommes Bar, n. Humboldt Co., Chandler 1523). Subtypical var. 

 californieus may occur in the Coast Eanges (Campbell Creek, Hupa, Chandler 1333) and typical 

 var. gordonianus in the Sierra Nevada (Bear Valley, Nevada Co., Jepson 13,450). The styles 

 of the flowers are commonly 4, their free portion varying from ^4 to l^ their length, but not in 

 association with any other character. We regard these two varieties, then, as unimportant forms 

 morphologically although having a little geographic significance. 



Field note. — The foliage is browsed by the deer, these animals being extremely fond of the 

 young shoots. The ripe seed are eaten by quail and by squirrels. The straight shoots of var. 

 gordonianus Jepson furnished the Hupas, native tribesmen, with an effective arrowshaft for the 

 chase and for war; it was tipped with a short foreshaft made of the hard wood of Amelanchier 

 alnifolia Nutt. 



Locs. — Sierra Nevada: Clough Cave, South Fork Kaweah Kiver, Jepson 4656; Cedar Creek, 

 Sequoia Park, Jepson 594 ; Merced Canon above El Portal, Jepson 8351 ; Bower Cave to Hazel 

 Green, Jepson 13,451; Hetch-Hetchy, Jepson 3413, 4618; Parrots Ferry, nw. Tuolumne Co., 

 A. L. Grant; Italian Bar, Stanislaus River, Jepson 6362; Gwin Mine, Calaveras Co., Jepson 

 13,481 ; Belden, Plumas Co., Jepson 4152 ; Rich Point, Middle Fork Feather River, Jepson 10,628; 

 Payne Creek, e. Tehama Co., Jepson 12,344; Sims, Shasta Co., M. A. Howe; Delta, Shasta Co., 

 Jepson 6185; Hupa, Chandler 1333. 



Var. gordonianus Jepson. Leaves often dentate, more obviously hairy than in var. califor- 

 nieus. — Mendocino Co.; Humboldt Co. North to British Columbia. 



Locs. — Williams Forks, ne. Mendocino Co., Jepson 13,449; betw, head of Yager Creek and 

 Bridgeville, M. S. BaTcer 78; Horse Mt., Humboldt Co., Tracy 7696; Redwood Creek, n. Humboldt 

 Co., Jepson 1964, 1964a; Hupa Valley, Jepson 2124. 



Refs. — Phtladelphus le-\visii Pursh, Fl. 1:329 (1814), tvpe loc. Clarks River, Lewis. Var. 

 CALIFORNICT7S Gray, Bot. Cal. 1:202 (1876) ; Jepson, Fl. W. Mid. Cal. ed. 2, 201 (1911), Man. 

 465, fig. 460 (1925). P. californieus Benth. PI. Hartw. 309 (1849), Hartweg 375, collected on 

 the excursion to Bear Valley from the Sacramento Valley, in the Pinus ponderosa belt (cf. Jep- 

 son, Erythea 5:55). P. cordifolius Lange, Fort. Landboh. FriL 66 (1871), based on cultivated 

 plants. P. fremontii Rydb. N. Am. Fl. 22:165 (1905), type loc. North Fork American River, 

 Fremont 511. P. platyphyllus Rydb. I.e. 167 (1905), type loc. Mt. Shasta (s. side), JJ. E. Brown 

 561. Var. gordonianus Jepson, Man. 466 (1930). P. gordonianus Lindl. Misc. 21 (1838), type 

 loc. Columbia River, Douglas. 



2. P. microphyllus Gray. Shrub 1 to 21/2 feet high; leaf -blades elliptic- 

 oblong, strigose-pubescent and whitish beneath, hirsutulose and greenish above, 

 3 to 7 lines long, the petioles very short (about Y2 line) ; cal^oc white-pubescent, its 

 lobes acuminate; petals white, broadly elliptic, 3 to 4 lines long. 



Cliffs or rocky places in the high mountains, 7500 to 8500 feet : Mt. San Jacinto; 

 White Mts. East to New Mexico and Colorado. Aug. 



Locs. — Dark Canon, Mt. San Jacinto, Peirson 4991 ; White Mts., Mono Co., ShocTcley 454. 



Refs. — PHILADEI.PHTJS MICROPHYLLUS Gray, Mem. Am. Bost. Soe. Nat. Hist. 4:54 (1849), 

 type loc. Santa Fe Creek, N. Mex., Fendler. P. pumilus Rydb. N. Am. Fl. 22:173 (1905), type 

 loc. Tamarack Valley, San Jacinto Mts., Hall 2500 ; Dav. & Mox. Fl. S. Cal. 172 (1923). P. stra- 

 mineus Rydb. I.e. 172 (1905), type loc. White Mts., Mono Co., ShocTcley. 



16. CARPENTERIA Torr. 



Shrub with opposite entire leaves and white flowers in a terminal cyme. Calyx 

 5 (or 6) -parted, its very short tube adnate to middle of ovary. Petals 5 or 6 (to 8). 

 Stamens numerous (150 to 200). Ovary incompletely 5 (2 to 8) -celled, that is, 

 with 5 (2 to 8) partitions originating on the walls and approximating but not 

 united in the axis (unless at base), the inner margins of the partitions bearing on 

 each side a placental plate; placental plates projecting into the incomplete "cells" 

 (2 plates to each "cell"), and bearing numerous ovules on both surfaces. Style 

 one, short, bearing commonly 10 longitudinal stigmatic ridges, each pair of ridges 



