

70 Contributions from the Gray Herbarium 



Seel. Rhinotropis, sect. nov. Carina intra apicem obtuse cyl- 

 indrico- vel conico-rostrata. Species typica P. Lindheimeri Gray. 

 This divides naturally into two subsections. 



Sepals (except generally the upper) and wings deciduous. 



Subsect. A. Eurhinotiiopis 

 Sepals and wings persistent Subsect. B. Pantomone, p. 77- 



Subsect. A. Eurhinotropis, subsect. nov. Sepalum superius 

 Baepissime persistenSj sepala inferiora ut alae decidua. Species 

 typica /\ Lindheimeri Gray. 



a. Plant practically glabrous, or very sparsely and minutely 

 strigillose; leaves oblong or lance-oblong, rounded at 



apex, not mucronate or reticulate 89. P. Fishiae. 



a. Plant pubescent; leaves acute (when obtuse cuspidate or 

 mucronate), more or less reticulate, b. 

 b. Leaves oval, C. 



c. Leaves glabrous, 4-9 mm. long 91. P. eucosma. 



c. Leaves usually incurved-puberulous, larger, d. 



d. Keel 5.5 mm. long 90. P. nitida. 



d. Keel 4.2 mm. long 91.1. P. Emoryi. 



b. Leaves (at least the upper) lanceolate or squamiform to 

 linear, e. 



e. Hairs of stem and leaves widely spreading 92. P. Lindheimeri. 



e. Hairs shorter, incurved or appressed, /. 

 /. Leaves normal, linear to lanceolate, g. 

 g. Leaves (except the lowest) linear, h. 



h. Racemes 3-6-jointed; flowers 4 mm. long. . .94.2. P. Tweedyi. 

 h. Racemes 8-15-jointed; flowers 5.5 mm. long. 



93. P. blepharotropis. 

 g. Leaves (except the lower) lanceolate to linear- 

 lanceolate, i. 



i. Raceme-axis 10-20-jointed 93.1. P. texensis. 



i. Raceme-axis 2-8-jointed, j. 



j. Aril 1.2 mm. deep 94.1. P. arizonae. 



j. Aril (1.6) 2-2.2 mm. deep 94. P. lithophila. 



f. Leaves squamiform 95. P. nudata 



89. P. Fishiae Parry. Frutescent, branching, 1-1.6 m. high, 

 the stem and branches woody, green, glabrous or very minutely and 

 sparsely strigillose. Leaves narrowly oblong or oblong-lanceolate, 

 rounded or retuse at the slightly mucronulate apex, cuneate to 

 rounded at base, glabrous, with about 10 pairs of lateral nerves, 

 not reticulate, 1.7-5 cm. long, 4-14 mm. wide, on petioles 1.5-2 

 mm. long, slightly strigillose on the upper side. Racemes terminat- 

 ing stem and branches, 2.5- (at length) 20 cm. long, 6-35-flowered, 

 not flexuose. Flowers 8.5 mm. long, purplish, whitish, and yellow- 

 ish, the lower subtended by oval leaf -like bracts about 7 mm. long; 

 pedicels 8-11.5 mm. long in fruit. Upper sepal elliptic, obtuse, 

 somewhat inflated, densely ciliolate, otherwise glabrous, 2.8-3.5 



