PEA FAMILY 471 



.min; 



VI. Hepextia. 



18. r. Kingii, 



cendhxg 



19. T. hybridum 



Plant creeping; coroUa white or tinged with puik. " 2ol T. repens. 



VII. Nana. 



Heads 1-3-flowered; flowers not reflexed; calyx-teeth lanceolate; caudex thick, densely 

 cespitose, with sliort branches. 21, r. nanum 



Heads several-flowered; flowers reflexed; calyx-teeth subiilate; branches of the caudex 



more slender and elongate. 

 Corolla purple, 15^20 mm. long. 22. T. Brandegei. 



Corolla white or hght rose. 10-15 mm. long. 23. T. Haydenii, 



^, VIII. Gymn^ocarpa 



Flowers 10-12 mm. long. 

 Flowers about 8 mm. long. 



IX. Dasyphylla. 



24. T. subacaulescens. 



25. T. gymnocarpon. 



wers renexed in fruit; bracts minute, truncate and toothed. 



Calyx two-thirds to three-fourths as long as the corolla, its teeth fully twice as long 



as the tube. 



26. T. stenolobum. 



Calyx about half as long as the corolla, its teeth only slightly longer than the tube. 

 Banner acuminate; leaflets linear-lanceolate. 27'. T. nUenuatum. 



Banner obtuse^ minutely mucronate; leaflets oblong-Iaaceolate to elliptic. 



■c,, ^ 28. T. bracteolatum. 



i? lowers not reflexed m fruit; bracts more conspicuous, lanceolate to subulate, long- 

 attenuate, except in the flrst species. 

 T^eaves as well as the whole plant densely silvery- white. 29. T. anemophilum. 



Lieaves green or brown, though somewhat silky. 



Bracts narrow, 1-nerved; leaflets broadest at or below the middle. 



Calyx-teeth only slightly longer than the tube; bracts glabrous, much exceed- 



ing the calyx-tube. 30. T. lividum. 



Calyx-teeth fully twice as long as the tube; bracts pubescent, slightly if any 



exceeding the calyx-tube. 

 Banner white or ochroleucous, merely tinged with purple; wings and keel 



dark ptu-ple; pubescence rather loose. 31. T. dasupkyllum. 



Banner as weU as the other "petals reddish purple; pubescence appressed. 



T^ ^ , , 32. r. scariosum. 



Bracts broader. 3-nerved; leaflets broader above the middle. 



33. T. uinicn^e. 



^ X. Andixa. 



one species. 34. f. andinum. 



. Parryana. 



Banner long-acute, much exceeding the wings; bracts ovate, exceeding the calyx, str 

 purple-veined. 36. T. salictorum 



Bajiner blunt, slightly exceeding the wings. 



yx-teeth only shghtly imequal; bracts exceeding the calyces; upper stipules 

 obovate. 36. T. Parryi. 



per calyx-teeth much shorter than the lower; bracts not exceeding the 



upper stipules ovate. 

 Peduncles 1-2 dm. long; bracts ovate. 

 Peduncles less than 1 dm. long: bracts ohovatft in ontlinfi 



37. T. inaequale. 



_ XII. In\'olxjcrata. 



Peremuals. 



Banner white; wings and keel tipped with dark purple; calyx-teeth twice as long as 

 the tube. 39. T. spinulosum. 



Banner as well as the other petals purple; calyx-teeth a little longer than the tube. 



Corolla 12-15 mm. long; involucres to about the middle. 40. T. Fendleri. 



Corolla about 10 mm. long; involucres cleft to below the middle. 



. , 41. r. oxydon. 



Annuals. 



Involucres much shorter than the flowers, not scarious; teeth long. 

 Leaflets obovate or elliptic. 



Flowers 7-8 mm. long. 42. T. variegatum. 



Flowers more than 1 cm. long. 43. T. subsalinum. 



Leaflets linear. 44. T. oliQanthum. 



Involucres almost equalling the flowers, scarious at least below, its teeth short or 



none. 

 Involucres glabrous, 8-10 mm. high, its lobes toothed; calyx-teeth temately 



divided, with setiform branches. 45. T. cyanthiferum. 



Involucres hairy, 5-7 mm. high, its lobes entire; calj-x-teeth simple, 



46. T. microcephatum, 



XIII. AGILiRIA, 



One species. 47. T.procumbens. 



