PHLOX FAMILY 189 



VI. PlNNATtFIDAE. 



Divisions of the leaves all linear-fllifonn, not wider than the rachis; corolla about 1 cm. 



long. 27. G. polyantha. 



Divisions, at least of the lower leaves, obovate or oblong, much broader than the rsichis. 



Corolla-tube 4-6 mm. long: calyx-lobes acuminate. 28. G. calcarea. 



Corolla-tube 8-10 mm. long ; calyx-lobes acute. 29. G. MacVickerae. 



VII. INCONSPICDAE. 

 Corolla 7-14 mm. long. 



Ceilyx about one-fourth as long as the corolla. 30. G. scopulorum. 



Calyx one-third to two-thirds as long as the corolla. 



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. hutchinsifolia. 

 Limb of the corolla 3—4 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. slraminea. 



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 sUghtly exceeding 

 the calyx. 

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



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

 filiform and entire. 47. G. minutiflora. 



VIII. Leptomehiae. 



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



37. 6. 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. 



Plan): 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 nun. long. 39. G. Crandallii. 



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



Flowers less than 1 cm. long; annuals. 



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



41. G. leptomeria. 

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

 Basal leaves oblanceolate, entire; perennials. 



BEisal 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. MlNUTIFLOKAE. 

 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. 



9. LANGLOISIA Greene. 



CoroUa almost regular and stamens nearly straight. 1. L. setosissima. 



Corolla bilabiate and the stamens declined, ciuTed. 2. L. Schottii. 



10. LINANTHUS Benth. 



Corolla short salver-shaped or campauulate. 



Calyx 7-8 mm. long; corolla 10-15 mm. long; stamens inserted in the middle of the 



tube. 1. L. Bigelovti. 



Calyx 4 mm. long; corolla 6-7 mm. long; stamens inserted near the base of the tube^ 



2. L. Dactylophyllum. 

 Corolla with a fimnelform throat and short tube. 



Corolla more than twice as long as the hirsute or strigose calyx. 



3. L. pharnaceoides. 

 Corolla about half longer than the glabrous calyx. 4. L. Harknessii. 



11. GYMNOSTERIS Greene. 



Lobes of the corolla 3—4 mm. long, truncate, imdulate at the apex. 1. G. nudicaulis. 



Lobes of the corolla 1-1. S mm. long, acutish. 2. G. parvuia. 



