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362 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. XIX half adnate to the floor of the calyx tube, the upper half free, slightly recurved; limen none; ovary globose, narrowed at base, densely tomentellous; fruit ovoid, thin-skinned, yellow (fide Mexia); seeds obovate, about 7 mm. long and 6 mm. wide, obscurely tridentate, coarsely reticulate. TYPE LOCALITY: Bafios, Tungurahua, Ecuador, where introduced from the eastern slopes of the Andes. ILLUSTRATION: Contr. U. S. Nat. Herb. 24: pi. 42. DISTRIBUTION: Eastern slopes of the Andes of Ecuador. ECUADOR : Pearce 694 (K) ; Vidal-Senege in 1876 (P) Rio Jamboya, . Sodiro (Mille 223; B, N). Tungurahua: Bafios, 1,850 meters (introduced), Popenoe 1271 (N, type); Mexia 6981 (N). Napo-Pastaza: Rio Zuni, Mexia 7056 (N). Archidona, Mexia 7284 (N). The type of P. Popenovii and most of the specimens examined lack petiolar glands, but in material recently collected by Mrs. Mexia obscure, scarlike glands are sometimes borne near the base of the petiole. Their presence here rather than at the apex and the long, slender peduncles separate this from P. laurifolia. From P. riparia and P. tolimana, which it also closely resembles, P. Popenovii of course is at once differentiated by the relative length of the two outer series of corona filaments. This is one of several species cultivated in Ecuador under the name "granadilla de Quijos," and the edible fruit is commonly on sale in the markets of Banos and Riobamba. Popenoe in Fruitbearing plants of Ecuador (Contr. U. S. Nat. Herb. 24: 124. 1924) quotes an early work in which the fruit is described as being somewhat larger than that of P. ligularis. 211. Passiflora nigradenia Rusby, Mem. N. Y. Bot. Gard. 7: 311. 1927. Plant glabrous throughout, drying yellowish green; stem terete, striate; stipules linear-subulate, 3 mm. long, soon deciduous; petioles 1.5 to 3 cm. long, canaliculate, bearing above middle 2 oval, sessile, black glands about 2 mm. long; leaves oblong, 12 to 20 cm. long, 5 to 9 cm. wide, abruptly acuminate at apex, rounded or subtruncate at base, entire, penninerved, coriaceous, sublustrous above; "flowers racemose, the racemes sometimes bearing as many as 10 flowers, and short-peduncled, pedicels 3 cm. long, terete"; bracts borne at base of flower, ovate, about 4 cm. long, 2 cm. wide, obtuse, finely puberulent without; flowers 6 cm. wide; calyx tube campanulate, 1.5 cm.
AMERICAN PASSIFLORACEAE 363 in diameter at throat; sepals oblong-lanceolate, about 3 cm. long, 1 to 1.2 cm. wide, obtuse, puberulent without; petals ovate-lanceolate, about 2 cm. long and 7 mm. wide; corona filamentose, the filaments in 2 series, white, banded with deep purple, the outer filiform, about 1 cm. long, the inner coarser, about 2 cm. long; operculum a fringe of slender, white filaments 1 to 1.5 mm. long; ovary ovoid, finely sericeous; fruit ellipsoidal, 10 cm. long, 8 cm. in diameter, obscurely pilosulous; seeds obcordate, 7 mm. long, 5 mm. wide, reticulate at center. TYPE LOCALITY: Bolivia: Beni: Rurrenabaque. DISTRIBUTION: Amazonian basin of northern Bolivia. BOLIVIA: Beni: Rurrenabaque, Rusby in 1921 (Y, type), 1272 (N, Y). La Paz: Tumupasa, R. S. Williams 515 (N, Y). San Buenaventura, R. S. Williams 374 (Y), 643 (BM, N, Y). From the other entire-leaved, small-stipuled species of Granadilla this differs in having a very simple coronal structure, only two rows of filaments at the throat of the calyx tube. The operculum is merely a row of slender filaments. The type sheet consists of two leaves and a detached flower, with no suggestion, consequently, of the racemose floral arrangement mentioned by Rusby. Wittiams 374, which, though without flowers, seems to belong to this species, bears a single peduncle (with bracts) in the axil of a leaf. The collector states that the fruit is esteemed highly by natives. 212. Passiflora ambigua Hemsl. Bot. Mag. 128: pi. 7822. 1902. Plant glabrous throughout, except the ovary; stem terete, striate; stipules filiform, 5 to 8 mm. long, deciduous; petioles 2 to 3 cm. long, bearing at or below middle 2 sessile, flattened glands; leaves oblong or ovate-lanceolate, 10 to 20 cm. long, 5 to 9 cm. wide, subabruptly acuminate, mucronulate at apex, rounded or cuneate at base, penninerved (principal lateral nerves 4 to 6 to a side, ascending), thickcoriaceous, lustrous; peduncles 4 to 7 cm. long; bracts ovate, 3 to 6 cm. long, 3 to 4 cm. wide, concave, entire, glandless; flowers 8 to 12 cm. wide; calyx tube cylindric-campanulate, about 1 cm. long; sepals narrowly linear-oblong, 4 to 5 cm. long, 1.5 to 1.8 cm. wide, obtuse, dorsally short-corniculate just below apex, fleshy, white without, pale pink and punctulate with rose-purple within; petals linearlanceolate, 3 to 4 cm. long, 0.8 to 1 cm. wide, membranous, white, dotted with rose-purple; corona filaments in about 5 series, the outer-
Page 2 and 3: THE UNIVERSITY OF ILLINOIS
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Synonyms in italics. INDEX Page num
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UNIVERSITY OF ILLINOIS-URBANA
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