LKwiaiA. PORTULACACEJE. 91 



OREOBKO.UA. 



P. oleracea L. Sp. 445. Glabrous and usually purplish : stems pros- 

 trate, 2-20 inches long: leaves flat, fleshy, obovate to spatulate, rounded at 

 the summit: stipules minute : sepals acute, carinate ; petals yellow, 1-2 

 lines long: stigmas 5: capsule 3-5 lines long: seeds dull, black, finely tu- 

 berculate : flowers sessile, axillary. Cultivated grounds and waste places 

 throughout North America, Europe, etc. 



2 LEWISIA Pursh. Fl. 368. 



Low acaulescent succulent perennials with thick fleshy roots, 

 short 1-flowered scapes that are joined and bracteolate near the 

 middle, and large usually pink flowers. Sepals 6-8 distinct, mar- 

 cescent-persistent. Petals 8-16, large and showy. Stamens nu- 

 merous. Style 5-8 parted nearly to the base. Capsule circum- 

 scissile at the very base then bursting irregularly, many-seeded. 

 Seeds black and shining. Cotyledons accumbent. 



L. rediviva Pursh. 1. c. Leaves densely clustered at the crown of the 

 thick caudex, linear-oblong, subterete 1-2 inches long, smooth and glau- 

 cous : scapes but little longer than the leaves, sepals broadly ovate, un- 

 equal, partly scarious 6-9 lines long, petals narrowly oblong 9-16 lines 

 jong, pink or rose-color to white : capsule broadly ovate, 3 lines long. On 

 t op of the highest hills and mountains east of the Cascade Mountains 

 >Fom California to British Columbia and the Rocky Mountains. 



3 OREOBROMA Howell Eryth. i, 31. 



Low acaulescent perennials with fleshy roots with or without a 

 multicipital caudex bearing tufted leaves and scapose stems 

 which are jointed at the base and 2-bracteolate below the inflor- 

 escence. Sepals 2, rarely apparently 4, persistent. Petals 3-10 

 or more. Stamens 5-20 or more usually not of the same num- 

 ber as the petals. Style deeply 2-7-cleft. Capsule membran- 

 aceous, cjrcumscissile at the base, thence splitting upwards irreg- 

 ularly, many seeded. Cotyledons incumbent. 



* Root branching, the caudex at the surface of the ground : nerves 

 of bracts and sepals excurrent and gland-tipped : stems terminating 

 in open paniculate many-flowered bracted racemes. 



0. Leana Howell 1. c. Calandrinia Leana Porter Bot. Gaz. i, 43. 

 Leaves numerous, terete or some of the other ones subspxtulate, acute, 1- 

 2 inches long, smooth and glaucous: scapose stems, 3-6 inches high ; sepals 

 rounded a line long by \%. hues broad : petals 6-8, obovate, bare retuse or 

 entire 3 lines long, red to white with darker veins. In beds of talc on high 

 exposed ridges of the Hiskiyou Mountains. 



0. Columbiana Howell 1. c. 32. Calandrinia Columbiana Howell Gray 

 Proc. Am. Acad, xxii, 277 . Leaves numerous, linear-spatulate flat 13^-3 

 inches long, not glaucous : scapose stems 5-12 inches high : sepals rounded 

 or truncate, a line long 1)^-2 lines broad: petals 4-7, oblong, more or 

 less truncate, deeply emarginate to entire, rarely several-toothed at 

 apex, 5-6 lines long, white or pink with dark red veins. On bare exposed 

 basaltic rock along the Columbia river below the Cascades. Cascade 

 Mountains lat. 49, LyalL 



O. Cotyledon Howell 1. c. 32. Calandrinia Cotyledon Watson Proc. Am. 

 Acad, ...r, 355. Leaves flat, spatulate or oblanceolate 1-2 inches long by 6- 

 12 lines broad, imbricated in a dense rosulate tuft: stems rather stout, 6- 

 12 inches high, Hometimes with 2 pairs of bracts below the short cymose 

 panicle: sepals 1)^-2 lines long ovate or or bictilar ; petals 5-10, 6-8 lines 



