692 POLEMONIACEAE 



Corolla-tube distinctly exserted from the calyx; leaves mostly basal or the stem- 

 leaves reduced. 



Plants branched near the base; the few stem-leaves pinnatifld. 

 Limb of the corolla 5-6 mm. wide; calyx glandular-puberulent. 



31. G. hutchinsi folia. 

 Limb of the corolla 3^ mm. wide; calyx glabrous or nearly so. 



32. G. sinuata. 

 Plants simple below, branched above; stem-leaves several, lanceolate, sharply 



toothed or rarely entire. 33. G. straminea. 



Corolla-tube scarcely exserted from the calyx; plant more leafy. 



34. G. inconspicua. 

 Corolla 4-6 mm. long. 



Plant leafy only at the base; divisions short and broad; corolla about twice as long 



as the calyx. 35. G. subacaulis. 



Plants leafy throughout; divisions of the leaves narrow; corolla only slightly exceeding 



the calyx. 



Leaves pinnatifld, with linear or oblong divisions. 36. G. Tweedyi. 



Lower leaves sometimes pinnatifld, with filiform divisions, otherwise the leaves 

 filiform and entire. 47. G. minutiflora. 



VIII. LEPTOMERIAE. 



Stamens exserted; inflorescence narrow and spike-like; leaves pinnately lobed. 



37. G. stenothyrsa. 

 Stamens not exserted; inflorescence an open panicle. 



Basal leaves toothed or lobed; annuals, biennials, or short-lived perennials. 

 Flowers 1 cm. long or more. 



Plant densely glandular; stem-leaves oblanceolate, usually toothed; corolla 



scarlet or orange. 38. G. subnuda. 



Plant nearly glabrous; upper stem-leaves lanceolate-subulate, entire; corolla 



rose-colored. 



Calyx 5 mm. long; corolla 15 mm. long. 39. G. Crandallii. 



Calyx 3 mm. long; corolla 10 mm. long. 40. G. Haydeni. 



Flowers less than 1 cm. long; annuals. 



Leaf-blades lanceolate, sinuately lobed; lobes scarcely spinulose-tipped. 



41. G. leptomeria. 



Leaf-blades orbicular or obovate, spinescent-toothed. 42. G. latifolia. 

 Basal leaves oblanceolate, entire; perennials. 



Basal leaves 4-5 cm. long. 43. G. pentstemonoides . 



Basal leaves 1 cm. long. 



Corolla about 5 mm. long; plant simple. 44. G. sedifolia. 



Corolla about 10 mm. long; plant cespitose. 45. G. caespitosa. 



IX. MlNUTIFLORAE. 



Tall plants with strict branches and erect pedicels. 



Pedicels longer than the fruiting calyces; branches ascending; capsule with 2 seeds 



in each cell; corolla 5 mm. long. 46. G. sinistra. 



Pedicels usually shorter than the fruiting calyces; branches nearly erect; capsule 



1-seeded; corolla 3-4 mm. long. 47. G. minutiflora. 



Low delicate plants with spreading branches; pedicels in fruit reflexed. 



48. G. tenerrima. 



1. G. frutescens Rydb. Stems woody below, branched above, 3-5 dm. 

 high; leaves linear, glabrous or nearly so, simple, 2-5 cm. long, 1-2 mm. wide, 

 callous-tipped; flowers capitate at the ends of the branches; calyx-teeth lanceo- 

 late, cuspidate, shorter than the tube; corolla white, 5-6 mm. long; tube barely 

 exserted; lobes about 2.5 mm. long, oval, acute. Utah. Son. My. 



2. G. spergulifolia Rydb. Stem low, more or less woody at the base, 5-10 

 cm. high, more or less pubescent with white crisp hairs, or puberulent; leaves 

 linear-filiform, entire, or the upper rarely with 1-2 similar lobes, tipped with a 

 pungent point; flowers in capitate clusters; calyx villous, with short subulate 

 pungent teeth; corolla 4-5 mm. long, white; tube not exserted; lobes oblong, 

 obtuse, a little over 1 mm. long. Stony slopes: Colo. Wyo. Mont. Utah. 

 Son. Je-Jl. 



3. G. crebrifolia Nutt. Stems several, from a branched woody caudex, 

 erect or ascending, sparingly villous, 5-15 cm. long; leaves simple, fleshy, crowded, 

 glabrous or nearly so, cuspidate, 1-2 cm. long; flowers capitate; calyx sparingly 

 villous; teeth subulate, shorter than the tube; corolla 4-6 mm. long, exserted; 

 lobes oval, about 2 mm. long. G. Merrillii A. Nels. Dry soil: Wyo. Submont. 

 Je. 



4. G. spicata Nutt. Biennial or perennial, with a taproot; stem simple, 

 erect, or branched at the base, arachnoid-villous, 1-3.5 dm. high; leaves linear, 

 entire, or with few linear lobes, 2-5 cm. long, 1-2 mm. wide, sparingly arachnoid; 



