FIGWORT FAMILY 



767 



Basal leaf-blades linear-oblanceolate. 



Throat of the coroUa fiuinelform, glandular-puberulent with- 

 in ; limb ample ; lower hp almost equalling the upper; sterUe 

 stamen bearded at the end. 65. P. puberulentus. 



Throat of the corolla almost cyUndric; Unab small; lower lip 

 shorter than the upper, pubescent within; sterile fila- 

 ment bearded at least half its length 

 Stem-leaves narrowly linea.r; calyx-lobes not scarious- 



margined. 66. P. oreganus. 



Stem-leaves narrowly lanceolate; calyx-lobes usually 

 with narrow scarious margins. 67. P. radicosus. 

 Basal leaf-blades oval or ovate. 68. P. humilis. 



XIII. Laricifolti. 



Calyx-lobes disttactly scai-ious-margined ; lower Up of the corolla sUghtly hairy within 



or glabroiis. 69. P. exilifolius. 



Calyx-lobes not scarious-margined ; lower lip of the corolla densely bearded within. 



70. P. laricifolius. 



XIV. Ambigui. 

 Corolla-tube over 1 cm. long. 71. P. ambiouus. 



Corolla-tube about 5 mm. long. 72. P. Thurberi. 



XV. Caespitosi. 

 Leaf-blades obovate, spatulate, or broadly oblanceolate. 



Leaves green 'and glabroiis or sUghtly puberulent ; calyx-lobes oblong-lanceolate. 



73. P. suffrutescens. 

 Leaves densely graj-ish or whitish puberulent; calyx-lobes lanceolate. 



Caly.x-lobes Unear-lanceolate, over 5 mm. long; plant grayish puberulent. 



74. P. caespitosus. 

 Calyx-lobes broadly lanceolate, scarcely 5 mm. long; plant almost wliite. 



75. P. Thompsoniae. 

 Leaf-blades narrowly oblanceolate to linear or filiform. 



Calyx-lobes scarcely scarious-margined, entire; inflorescence few-flowered; floral 

 leaves Like the rest. 

 Leaves green and glabrate. 



Corolla 20-25 mm. long, deeply 2-hpped, with relatively broad tube. 



76. P. Crandallii. 

 Coroila 15-20 mm. long, less deeply 2-lipped, with a narrow tube. 



77. P. xylus. 

 Leaves densely canescent-puberulent. 78. P. teucrioides. 



Calyx-teeth scarious-margmed, dentate or erose; inflorescence many-flowered, racemi- 

 form; floral leaves reduced. 79. P. coloradensis. 



One species. 



XVI. Glakdulosi. 



XVII. AZUREI. 



80. p. glandulosus. 



82. P. Richardsonii. 



83. 



84. 



P. diffusus. 

 P. diphyllus. 

 P. triphyllus. 



Leaves dentate, incised, or pinnatifld. 



CoroUa about 3 cm. long; flowers in a dense terminal panicle; anthers viUous. 



81. P. venustus. 

 Corolla 1-3 cm. long; flowers in an open more or less leafy panicle with spreading 

 branches; anthers glabrous. 

 Leaves opposite. 



Leaves incised or pinnatifld. 

 Leaves merely dentate or serrate. 



Leaves serrate; corolla 15-20 mm. long. 

 Leaves saUently dentate; corolla 12-15 mm. long. 

 Leaves in whorls of three. 85. 



Leaves entire. 



Calvx and Inflorescence more or less glandular; leaves puberulent. 



86. P. Kingii. 

 Calyx and Inflorescence glabrous or the latter somewhat puberulent but not glandular. 

 Calyx-lobes lanceolate, acute or acuminate. 



Stem-leaves lanceolate, oblong or oblanceolate to Unear, glabroiis. 



Plant low and decumbent at the base; lower stem-leaves oblanceolate, the 



upper oblong; calyx-lobes narrowly lanceolate. 87. P. Leonardi. 

 Plant taU; stem-leaves lanceolate or oblong-lanceolate; calyx-lobes ovate- 

 lanceolate, acuminate. 88. P. platyphyllus. 

 Stem-leaves Unear, puberulent. 89. P. Cusickii. 

 Caly.x-lobes broadly ovate or obovate, mucronate, scarious-margined; leaves Un- 

 ear to lanceolate. 90. P. sepalulus. 



XVIII. PUNICEI. 



Stem and leaves puberulent; upper stem-leaves more or less actuninate. 



91. P. coccinatus. 

 Stem and leaves glabrous or nearly so; stem-leaves obtuse or aciite. 



Stem-leaves ovate to lanceolate; coroUa 2-3 cm. long. 92. P. Eatonii. 



Stem-leaves Unear-lanceolate; coroUa 1.5—2 cm. long. 93. P. ulahensis. 



Lower Up bearded within. 

 Lower Up glabrous within. 



XIX. Barbati. 



94. P. barbatus. 



