12 TEXAS RESEARCH FOUNDATION: CONTRIBUTIONS, VOLUME 5 
Filamenta glabrous. <2... 6. 0 cee cd cs Series 23, pp. 180-192. 
70. P. psychotrioides. 
71. P. melanosticta. 
72. P. Setbertit. 
73. P. angustifolia. 
74. P. Moritziana. 
General Key to Species 
SECTION I 
Inflorescences terminal, pyramidal-paniculate 
1. Anthers versatile, or tardily versatile in P. acuminata and P. pyramidalis, 
dorsifixed at or about the middle; filaments longer than the anthers...... 
ince Saw aes es a ee Series 1-2. 
Series 1-2 
2. Ovules 8-14 (19), minute, usually crowded, uniseriate, partly biseriate, 
or pluriseriate; ovary glabrous, papillose apically, or tomentose; sepals 
usually small, often less than 1 mm. long, sometimes up to 1.4 mm. long. 
3. Anthers versatile at anthesis, small, usually less than 2 mm. long, 
conspicuously shorter than filaments. 
4. Ovary tomentose; anthers conspicuously black-punctate dorsally, 
glands occasional in lobes; filaments elongate, 2.5-3.5 mm. long. 
5. Sepals small, less than 1 mm. long; style stubby, usually less than 
3 mm. long, with hairs at base; inflorescences finely tomentose 
with minute branched hairs (Honduras, Nicaragua, Costa 
RiGG) os ea a 1. P. trichogyne. 
5. Sepals 1-1.4 mm. long; style slender, 4-5 mm. long, glabrous; 
inflorescences conspicuously glandular, densely papillose and 
with upper layer of branched hairs (Guatemala, British 
Hondutas, Hondiirash:<50 3; 05... 2. P. chrysophylla. 
4. Ovary glabrous, or minutely papillose apically, the style glabrous; 
anthers sparingly punctate dorsally with minute black glands, 
without glands in lobes; filaments about 2 mm. long. 
6. Inflorescences terminal or axillary, minutely tomentose with 
fine hairs; ovary glabrous except at base of style, the style 
pubescent at base and with scattered hairs to middle; flowers 
5-parted; petals red-punctate in lines; stamens 2.75-3 mm. 
long (El Salvador)... 6.8 3. P. acuminata. 
6. Inflorescences strictly terminal, densely papillose; ovary minutely 
papillose apically, the style glabrous; flowers 4-parted, some- 
times 5-parted; petals black-punctate in lines; stamens 2.5 
mm. long or less (Guatemala)......... 4. P. papillosa. 
3. Anthers tardily versatile, large, 2.2-2.4 mm. long, with conspicuous 
triangular black-punctate area dorsally, subequaling filaments 
(Colombia) 2... it os 5. P. pyramidalis. 
2. Ovules 5 or 6, uniseriate; ovary puberulent Apically with minute reddish 
hairs; sepals 1.7-2 mm. long (Panama)......... 6. P. panamensis. 
