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1. TURNERA Plum. 
Mostly suffrutescent plants, with petals longer than the calyx, 3 or 4 
simple styles with flabellate many-cleft stigmas, and capsule 3-valved 
from apex to middle. 
1. T. diffusa Willd., var. APHRODISIACA Urban. Low branching strigose-pubes- 
cent shrub: leaves thickish, small, narrowly oblong, tapering to a short slender 
petiole, regularly dentate, more or less rugose, the regular pinnate viens impressed 
above and prominent beneath, green above, whitish beneath, 12 to 25 mm. long, 4 to 
6 mm. broad: flowers rather small and axillary, the calyx and twisted petals tardily 
deciduous and broken loose at base by the enlarging capsule.—A Mexican species 
discovered by Nealley in Starr County. This is a well known medicinal plant, first 
distinguished by Prof. Lester F. Ward, and long known as “Damiana.” Oceur- 
ring in abundance throughout northern and western Mexico, where it is extensively 
collected for medicinal purposes, its discovery within our own borders is an interest- 
ing fact. Known in Mexico as “ Yerba de Vemulo.” 
PASSIFLORACEH. (PASSION-FLOWER FAMILY.) 
Herbs or woody plants, climbing by tendrils, with perfect flowers, 5 
monadelphous stamens, and a stalked 1-celled ovary free from the calyx, 
with 3 or 4 parietal placente and as many club-shaped styles. 
1. PASSIFLORA L. (PASSION-FLOWER.) 
Climbing plants, with alternate generally palmately-lobed leaves, 
axillary jointed peduncles, 5 sepals united at base into a short cup 
(usually colored like the petals, at least Within) and the throat crowned 
with a double or triple fringe, 5 petals on the throat of the calyx, 5 
stamens with the filaments united into a tube which sheathes the long 
stalk of the ovary and separate above, and fruit a many-seeded (often 
edible) berry. 
* A conspicuous 3-bracted inrolucre close to the flower. 
1. P.incarnata L. Pubescent: leaves 3 to 5-cleft, the lobes serrate, the base bear- 
ing 2 glands: flower large, 5 cm. broad, nearly white, with a triple purple and flesh- 
colored crown: peduncle with a 3-bracted involucre near the flower, the bracts obo- 
vate and glandular: fruit as large as a hen’s egg.—aA species of the Southern States 
and extending into Texas to Gillespie County and the San Antonio valley. Fruit 
called ‘‘ maypops.” 
2. P. foetida L. Villous and glandular: leaves roundish, 3-lobed or angular, usu- 
ally cordate at base, ciliate with hairs and glands on the denticulate or subentire 
margin: flowers white, with a triple rosy crown: involucre 3-leaved, the leaves 2 or 
3 times pinnately-parted, the ultimate filiform divisions excurrent into a gland: fruit 
large, ovoid.—Along the lower Rio Grande, from Eagle Pass downwards. 
** Involucre minute or none. 
3. P. affinis Engelm. Glabrous: leaves 3-lobed, glaucous beneath and petioles 
without glands, the lower subcordate, the upper subacute at base, the lobes about 
equal, obovate, obtuse, entire, and setaceous-mucronate: peduncles with 2 or 3 small 
setaceous bracts: flower smaller, about 3 cm. broad, yellowish, the fringe of the crown 
as long as the sepals: fruit bluish-black, 12 mm. in diameter and on a stipe as long.— 
From the Colorado to the Rio Grande and west to the Pecos. 
