268 PORTULACACE^. Lewisia. 



•i— Seeds granulate, conspicuously strophiolate or arillate at the hilum. 

 L.* Tweedyi, Robinson, n. comb. Caudex and root very thick : leaves obovate, fleshy 

 (2 to 4 inches long, including the winged petiole, and inch or two wide), rather shorter than 

 the 1-3-tiowered fructiferous scapes: fructiferous sepals orbicular, or broadly ovate, obtuse, 

 somewhat scarious and colored (5 lines long) and with the alternate narrower bracts of the 

 scape entire and glandless: petals apparently inch long: stameus 10 or 11 : capsule 20-30- 

 seeded, 3-valved from below upward ; seeds with a large loose scalelike round-reniform 

 arillus rather than strophiole. — Calandrinia Twtedyi, Gray, Proc. Am. Acad. xxii. 277. 

 Oreobroma Tweedyi, Howell, 1. c. 32. — Alpine region, on the sides of Weuatchee Mountains, 

 Yakima region, Washington, at 6,000-7,000 feet alt., Tweedy, Brandegee. 



■i— -t— Seeds obscurely or not at all strophiolate, mostly very smooth and shining. 

 ++ Plant rarely a span high, from an oblong-conical root: scapes 1-3-flowered, mostly with 



a pair of bracteal small leaves, not surpassing the linear or spatulate-lauceolate moderately 



fleshy radical leaves. 

 L.* Nevadensis, Robinson, n. comb. Sepals ample, in fruit 4 or 5 lines long, entire : petals 

 6 to 8, white, half inch long, unequal : stamens 6 to 9 : ovules 30 to 40. — Calandrinia 

 Nevadensis, Gray, Proc. Am. Acad. viii. 623, xxii. 276 ; Brew. & Wats. Bot. Calif, i. 75. 

 Talinum pijgmceitm, Wats. Bot. King Exp. 42, in part. Oreobroma Nevadensis, Howell, 1. c. 

 33. — Sierra Nevada, California, from San Bernardino Co., northward, east to the Wasatch 

 Mts. in Utah, and north to Washington; first coll. by Watson. 

 L.* pygmsea, Robinson, n. comb. Smaller : scapes less stout : sepals erose-dentate at the 

 (piasi-truncate summit, the teeth gland-tipped : petals 6 to 8, rose-red : stamens about as 

 many: ovules 15 to 20: otherwise as in the preceding. — Talinum pygmceuin, Gray, Am. 

 Jour. Sci. ser. 2, xxxiii. 407 ; Wats. 1. c, in part. Calandrinia pygrnaa, Gray, Proc. Am. 

 Acad. viii. 623, xxii. 276, not Muell. C. Grayi, Britton, Bull. Torr. Club, xvii. 312. Oreo- 

 broma pygrnaa, Howell, 1. c. — Alpine region of the Rocky Mountains, Montana and 

 Wyoming to Colorado (first coll. by Parry), west to the Cascade Range, northward to the 

 British boundary, and southward to the Sierra Nevada of California. 

 ++ ++ Scapes or scapiform stems a span or two high from a thick multicipital caudex on 



a long and thick root, paniculately several-many-flowered : sepals (as in the last preceding 



species) rounded or subtruncate and erose-dentate or fimbriate, much shorter than the 



obovate rose-red petals. 

 = Caulescent : a pair or two of opposite or subopposite foliar oblanceolate leaves on the 



stem not far from the base : calyx-teeth and floral bracts glandless. 



Li.* oppositifolia, Robinson, n. comb. Leaves narrowly oblanceolate, the radical and 

 lower cauliue similar, 18 lines to 3 inches long, acutish : flowers few, large, long-pedicelled, 

 shortly racemose or subumbellately clustered : bracts of the inflorescence ovate-oblong, 

 somewhat scarious, subentire or erose-denticulate, but with teeth glandless. — Calandrinia 

 oppositifolia, Wats. Proc. Am. Acad. xx. 355; Gard. Chron. ser. 3, iv. 601, f. 83; Garden, 

 xl. 485, with flg. ; Hook. f. Bot. Mag. t. 7051. Oreobroma oppositifolia, Howell, 1. c. 32. — 

 Bare moist hillsides, near Waldo, Oregon, and on the Coast Mts. of Del Norte Co., Calif., 

 Howell. 

 = = Foliar leaves essentially basal ; those of the stem much reduced and bractlike ; 



floral bracts and calyx with flue glandular-tipped teeth. 

 a. Leaves fleshy but flattened, obovate to spatulate, rather large, 2 or 3 inches long, usually 



half inch or more in breadth. 

 Li.* Cotyledon, Robinson, n. comb. Leaves obovate-spatulate ; those of the cymosely 

 several-flowered scape very few and reduced to small oljlong altern.ate or subopposite bracts : 

 petals about 10, large and red : stamens 7 or 8 ; their filaments dilated and more or less 

 coherent at the base: ovules 15 to 20. — Calandrinia Cotyledon, Wats. Proc. Am. Acad. xx. 

 355. Oreobroma Cotyledon, Howell, 1. c. — Siskiyou Mountains of N. California, Howell. 

 L.* Howellii, Robinson, n. comb. Leaves narrower, spatulate, with margins scarious and 

 crisped : flowers large, " red, streaked with orange " : stamens nearly or quite free to the 

 base. — Calandrinia Howellii, Wats. 1. c. xxiii. 262. Oreobroma Howellii, Howell, 1. c. — 

 Moony Mountains, Josephine Co., Oregon. Perhaps only a form of the last. 



