ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS. 9 
Perianth tube usually shorter than in the last, bent near the base. 
Perianth lobes somewhat elongated and spreading. 
Stout; leaves broad .....----- 
More slender; leaves narrower 
cece eee ee eee eee eee eee eee 7. P. tuberosa. 
Lecce ee eee eee eee eee eee eee eee eee 8. P. gracilis. 
Perianth lobes short and erect or slightly spreading. 
Flowers white ......-.------------- 2-22 - eee eee 9. P. montana. 
Flowers red or orange. 
Stamens inserted near the top of the tube......----+++-------- 10. P. platyphylla. 
Stamens inserted near the base of the tube. 
Plant pubescent below; leaves grass-like.....2.--+----++-+-- 11. P. graminifolia. 
Plant glaucous; leaves broad. ...--+-+--++---+-+-220+2750-- 12. P. geminiflora. 
1. Polianthes palustris Rose, sp. nov. FIGURE 1, 
Bulbs oval to oblong, 2 to 3 em. long; stems about 4 dm, high, erect, glabrous 
throughout; basal leaves several, 2 to 3 dm, long, 12 to 15 mm. broad, narrowed to 
a more or less distinct petiole, 
prominent, glabrous; stem leaves 3 or 4, becom- 
ing much reduced above; flowers 3 to 5 pairs, 
the lower shortly pediceled, the upper nearly 
sessile; perianth 3 to 6 em. long, curved just 
below the middle, white; segments short (5 to 
6 mm. long), broad, rounded at apex, somewhat 
spreading; filaments short, inserted near the top 
of the tube; anthers not exserted; ovary free 
at tip. 
Collected by J. N. Rose in swamps on the 
western foothills of the Sierra Madre, between 
Acaponeta and Pedro Paulo, Territorio de Tepic, 
August 2, 1897 (no. 1943). 
The flowering specimens of this plant gave off 
the delightful odor of the common cultivated 
tuberose. 
2. Polianthes durangensis Rose, sp. nov. 
\ 
Fic. 2.—Flowers of Polianthes duran- 
gensis, natural size. 
parallel veins 
FIGURE 2. 
Bulbs small, 
2 em. long; 
stems 3 to 6 
dm. high, 
erect, glabrous throughout; basal leaves several, 1 
to 2.5 dm. long, erect, linear, 3 to 5 mm. broad, with 
prominent parallel veins, glabrous; stem leaves 
about 3, the upper much reduced; flowers 1 to 6 
pairs, all sessile; perianth 4 to 5 cm. long, at first 
nearly erect, becoming curved (in age strongly 80) 
near the middle, nearly white but drying purplish; 
segments spreading, 8 mm. long, rounded at apex; 
stamens inserted near the top of the perianth tube; 
filaments short; anthers not exserted; ovary free 
at tip. 
Collected by J. N. Rose on the west slope of 
Fig. 1.—Flowers of Polianthes palustris, 
natural size. 
the east range of the Sierra Madre in the State of Durango, August 16, 1897 
(no. 3515, type); also (probably this) near Santa Teresa, Territorio de Tepic, August 
11, 1897. 
