70 Contributions from the Gray Herbarium 
Sect. Rhinotropis, sect. nov. Carina infra 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 
ubsect. A. EURHINOTROPIS 
Sepals and wings persistent................ Subsect. B. PANTOMONE, p. 77: 
Subsect. A. Eurhinotropis, subsect. nov. Sepalum superius 
saepissime persistens, sepala inferiora ut alae decidua. Species 
typica P. Lindheimeri Gray. 
a. ae {eke aces glabrous, or very sparsely and minutely 
ose; leaves oblong or lance-oblong, rounded at 
x, not mucronate or reticulate. ................. 89. P. Fishiae. 
a. Plant fing wtih leaves acute (when oe cuspidate or 
mucronate), more or less reticulate, 
b. Leaves ov: 
c. Leaves por tat 4-9) tam. dot as So i i 8 ce 91. P. eucosma. 
c. Leaves peer! tired end larger, d. 
d. Keel 5.5 ocr se ers ci ee Pe ann esate P. nitida. 
d.. eel £7 vom. os a ee a as 91. i P. Rabe, 
b. a= (at least rc eral lanceolate or squamiform to 
ear, 
airs of stem and leaves widely spreading...... 92. P. Lindheimeri. 
e Hairs shorter, incurved or spe ssed, f. 
Leaves n , linear to lanceolate, g 
h. Racemes 3-6-jointed; flowers 4 mm. ong oe ne P. Tweedyi. 
h. Racemes 8-15-jointed; flowers 5.5 mm : 
93. 2. blepharotropis. 
g. ray Bairaag the lower) lanceolate to linear- 
a. Siemens axis 10-20-jointed Mei ea 93.1. P. texensis. 
i. ee ae 4 
j 1 1S hin, Gem eis 94.1. P. arizonae. 
Aril (1. 8) 2-2, 2 n ae Gee a a 94. P. lithophila. 
7 tomvn SOUATITOTN 4 95. P. nudata 
89. P. Fisntar 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 em. 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 
