_>.;_> CRASSULACEAE (ORPINE FAMILY) 



3, lanceolate or oblong, entire or distantly serrulate, 4-8 cm. long: flowers nu- 

 merous, n-ddish-purple, sometimes pinkish or white; the fruiting raceme be- 

 coming very lorm: capsule oblong or narrower, acute, 3-5 cm. long, longer than 

 the stipe which about equals the spreading pedicel. C. integrifolia. [C. inor- 

 niita (Ireeiie, Pitt. 4: 16. 1899 (?).] ROCKY MOUNTAIN BEE-PLANT. From New 

 Mexico to Montana; also eastward to Missouri. 



2. Cleome sonorae Cray, PI. Wright. 2: 16. 1853. Glabrous, erect, 3-6 dm. 

 high : leaves short -petioled and the upper almost sessile: leaflets 3, very narrowly 

 linear as also the simple similar bracts: raceme loose: petals white and rose- 

 color, spatulate, 4 mm. long: capsule cylindraceous, torulose, 6-8-seeded, 

 pendulous on a usually shorter stipe from the much longer and spreading 

 filiform pedicel: seeds smooth. Colorado, New Mexico, and Arizona. 



3. Cleome lutea Hook. Fl. Bor. Am. 1: 70. 1830. Glabrous and more or 

 less branched, 2-5 dm. high: leaflets digitately 5-foliolate, petioled, or the upper 

 subsessile and 3-foliolate, linear-oblong, entire: flowers bright yellow, in a 

 corymbose raceme which elongates in fruit: stamens much exserted: capsule 

 linear, on a stipe which becomes longer than the slender pedicel. From Ne- 

 braska to the far west. 



3. POLANISIA. CLAMMY-WEED 



More or less branching annual herbs, ill-scented and mostly glandular- 

 pubescent (clammy), with trifoliolate petioled leaves. Flowers whitish or 

 purple, in leafy-bracted racemes. Sepals sometimes united at base. Petals 

 somewhat clawed and emarginate. Stamens 8 or more, somewhat unequal. 

 Capsule sessile, elojngated, flattened or cylindrical, many-seeded. 



Stamens long-exserted; flowers large . . . . . 1. P. trachysperma. 



Stamens barely longer than the petals . . . . . . 2. P. graveolens. 



1. Polanisia trachysperma T. & G. Fl. N. A. 1: 669. 1840. Very clammy 

 glandular-pubescent, 2-5 dm. high, somewhat branched: leaflets lanceolate 

 or narrowly oblong-ovate: floral bracts foliar, mostly simple: petals 10-12 mm. 

 long, with slender claws as long as the sepals: stamens slender, much exserted; 

 the filaments purple: capsule sessile or nearly so, 3-4 cm. long: seeds pitted 

 and roughened. From Texas to the Columbia river. 



2. Polanisia graveolens Raf. Am. Journ. Sci. 1: 378. 1819. Similar but 

 less glandular-pubescent, equally heavy scented: leaflets oblong: flowers only 

 half so large: stamens scarcely longer than the petals: capsule lanceolate- 

 oblong, somewhat compressed, substipitate. Southern Colorado and east- 

 ward across the continent. 



50. CRASSULACEAE DC. ORPINE FAMILY 



Usually succulent or fleshy plants, ours all herbaceons ; with exstipulate 

 leaves and usually cymose flowers. Calyx free and 4-5-parted or cleft. Petals 

 of the same number, distinct or slightly united at base. Stamens as many or 

 twice as many. Carpels 4-5, forming as many follicles which are dehiscent 

 :I|<MK the ventral suture. Seeds numerous. Receptacle often with a scale 

 at the l.ase of each carpel. 



us as many as the calyx-lobes ... ,1. Tillaeastrum. 

 BUUUflm twice us many as the calyx-lobes 2. Sedum. 



1. TILLAEASTRUM Brit. PIGMY WEED 



Small glabrous aquatic annuals, with opposite entire leaves and minute 

 solitary axillary flowers. Sepals 4. Petals 4, distinct or slightly united. 

 Slam. 'us, styles, and carpels of the same number. Seeds few. 



1. Tillaeastrum aquaticum (L.) Brit. Bull. N. Y. Bot. Card. 3: 1. 1903. 



