66 



ERICACEAE 



plane; stamens in 2 equal sets, the stamens of each set more approximate on one 

 side than on the other ; fruit whitish or at length blue-black. 



Deep forest humus : Sierra Nevada, 4000 to 8300 feet, from Siskiyou Co. to 

 Tulare Co.; Mendocino Co. to the Santa Cruz Mts., 1500 to 4000 feet. June-Aug. 

 Locs. — Sierra Nevada : Mt. Shasta (N. Am. Fauna 16: 157) ; Brush Creek, Butte Co., Con<7er; 

 Truckee Elver, Sonne; Dorrington, Calaveras Co., Jepson 10,052; Cascade Creek, Middle Fork 

 Stanislaus Eiver, Jepson 6528 ; Strawberry, Tuolumne Co., Jepson 6496 ; Hazel Green, Mariposa 

 Co., Jepson 14,607 (upper bracts vrith 2 ligulate lobes at base; lower flowers on pedicels % inch 

 long, the upper sessile) ; Wawona, Jepson 4301 (stamens 8 in 2 sets, the sets more approximate on 

 one side than the other) ; Huntington Lake, A. L. Grant 1143; McKinley Big Trees, Fresno Co., 

 A. L. Grant 1204; Huckleberry Mdw., Giant Forest, Newlon 53. Coast Ranges: Signal Ridge near 



Yorkville, Mendocino Co., IF. W. Carruth; Healdsburg (Zoe 

 4:154) ; Big Basin, Santa Cruz Mts., C. A. Reed. 



Eefs. — Pleuricospora riMBRiOLATA Gray, Proc. Am. 

 Acad. 7:369 (1868), type loc. Mariposa Grove, Bolander; 

 Jepson, Fl. W. Mid. Cal. 367 (1901), ed. 2, 310 (1911), Man. 

 C / \ 740, fig. 721 (1925). 



s 



23. PITYOPUS Small 



Dull white saprophytic herb resembling Pleuri- 

 cospora. Stems erect, .simple, one or few from a 

 small globular root-cluster and terminating in a 

 sub-pj-ramidal raceme, the lowest pedicels % to 1% 

 inclies long. Sepals 4 or 5, glabrous, sometimes in- 

 distinguishable from subtending calyx-bracts, these 

 2 to 4 or (apparently) suppressed. Corolla white; 

 petals 4 or 5, distinct or nearly so, pubescent within, 

 slightly exceeding the sepals, entire, more or less 

 carinate toward the base and broadened just be- 

 low the abruptly acute summit. Stamens 8 or 10; 

 filaments pilose, densely so above, dilated below. 

 Ovary globose, glabrous, 1-celled; placentae 6 to 10, 

 large (almostfillingeavity of ovary). Style equal- 

 ing the ovary, hairy; stigma yellow, annular-um- 

 bilicate, a heavy collar of hairs beneath the annulus. 

 Fruit unknown. — Species 1. (Greek pitus, pine, 

 and pus, foot, from the habitat.) 



1. P. californica Copel. f. Stems 21/2 to 8 

 inches high; herbage glabrous; leaves scale-like, 

 scattered, broadly ovate or deltoid-lanceolate, entire or erose, % to 3^ inch long; 

 bracts resembling the stem leaves but smaller and lance-acute, those of lower pedi- 

 cels linear-subulate, 2 to 3 lines long; sepals elliptic or narrowly oblong, acute, 

 erosulate at summit; corolla white, 5 to 10 lines long; nectai-y disk-like, encircling 

 base of ovary, bearing mamilliform teeth; anthers "red," globoid. 



Deep forest shade, 1000 to 3000 feet, widely scattered and rare : Redwood belt 

 from Marin Co. to Humboldt Co.; Fresno Co., Sierra Nevada. North to Oregon. 

 June-July. 



Tax. note. — In the excellent material collected by Virginia P. Fox on Bald Mt., Humboldt 

 Co., in 1919, the petals, while markedly hairy within, are also hairy on the outside. They are 4 

 in number and united at the base in pairs, the pairs being anterior and posterior, and distinct 

 laterally. The petals in the material examined by H. F. Copeland (cf. Madroiio 3:155-156) are 

 described as glabrous without. 



Locs. — Little Carson Creek, Marin Co. ; Bald Mt., Humboldt Co., Virginia P. Fox; Hupa, 

 Humboldt Co., Chandler; Sequoia Lake, Fresno Co. (Madrono 3:155). 



Eefs. — PiTYOPUS CALIFORNICA Copel. f., Madroiio 3:155, pi. 5-8, fig. 1 (1935). Monotropa 

 californica Eastw., Bull. Torr. Club 29:75 (1902), type loc. Little Carson Creek, Mt. Tamalpaia, 

 Eastwood. M. hypopitys var. californica Domin, Sitzber. boehm. Ges. Wiss. 2^:24 (1915). Pity- 

 opus oregona Small, N. Am. Fl. 29:16 (1914), type loc. Mt. Hood, Ore., T. Howell. Hypopitys 

 californAca Hel., Muhl. 9:68 (1913). 



Fig. 317. Pleumcospora fim- 

 BRIOLATA Gray, a, fl. stem, X V2 ; 

 b, fl., X 1; c, pistil, X 2; d, cross 

 sect, of ovary, X 4. 



