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448 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. XIX within; petals oblong, slightly shorter and broader than the sepals, bluish; corona filaments filiform, in about 6 series, the 2 outer 0.6 to 2 cm. long, purple(?), those of the succeeding series decreasing in length from 4 to 2 mm. long; operculum membranous, 2 to 3 mm. high, slightly plicate, bearing adnate to outer surface a row of filaments about 5 to 7 mm. long and within a row of minute tubercles; nectar ring a low ridge; limen tubular, closely surrounding base of gynophore; ovary ellipsoidal, glabrous; fruit ovoid, the pericarp coriaceous, yellowish. TYPE LOCALITY: Gran Chaco, Argentina. DISTRIBUTION: South-central Brazil, Paraguay, and northeastern Argentina. BRAZIL: Matto Grosso: Porto Esperanza, Rio Paraguay, Chase 11093 (B, N). PARAGUAY: Pilcomayo River, Morong 1505 (Y). Asuncion, Balansa 2202 (Bo, K). ARGENTINA: Chaco: Gran Chaco, Gibert 43 (K, type). Chaco, Fiebrig 1453 (B, Gen, K). Barranqueras, Meyer 2231 (N). The detailed description of the floral parts here given is drawn mainly from the excellently preserved specimens obtained by Morong, Meyer, and Chase. In the structure of the operculum P. Giberti differs slightly from Brown's diagnosis as "membranacea, deflexa, integra." Doubtless Brown considered the row of filaments attached to the operculum as part of the (faucial) corona. In the Meyer specimen the principal corona filaments are less than half as long as in Mrs. Chase's plant; however, as heretofore noted, there is a good deal of difference in the length of these filaments in species of Granadilla. Meyer notes that the color of the flowers is blue. This is completely lost in drying. The plicate operculum at once suggests a relationship with P. kermesina, P. Eggersii, and P. Watsoniana, but the larger bracts, borne close to apex of peduncles, indicate a different relationship. Passiflora tucumanensis and P. naviculata, with which this species might easily be confused, have glandless petioles and a quite different flower structure. 279. Passiflora Eichleriana Mast, in Mart. Fl. Bras. 13, pt. 1: 616. pi. 128, /. 5. 1872. Passiflora violacea f. albiflora Chod. & Hassl. Bull. Herb. Boiss. II. 4: 63.1904.
AMERICAN PASSIFLORACEAE 449 Plant glabrous throughout; stem terete, slender, purplish; stipules oblong-lanceolate, 1.5 to 3 cm. long, 0.8 to 1.5 cm. wide, acuminate, oblique, rounded at base; petioles 2 to 6 cm. long, bearing 3 or 4 pairs of opposite or subopposite, ligulate glands up to 2 mm. long; leaves 4 to 8 cm. long, 5 to 10 cm. wide, 3-lobed to below middle (lobes oblong, 1 to 3 cm. wide, acute or obtuse, mucronate, entire, the sinuses acutish, 2-4-glandular), cordate and subpeltate at base, 5-nerved, membranous; peduncles 3 to 6 cm. long; bracts ovate, 1 to 2 cm. long, about 1 cm. wide, acute, rounded or cordulate at base, entire or sometimes glandular-denticulate; flowers up to 7 cm. wide; calyx tube campanulate; sepals oblong, about 1 cm. wide, subcoriaceous, bearing a foliaceous awn nearly 1 cm. long; petals oblong, slightly shorter than the sepals, membranous; corona filaments in about 6 series, those of the 2 outer filiform, as long as the petals, radiate, the succeeding ones capillary, 2 to 3 mm. long; operculum membranous at base, filamentose above, bearing within small, inflexed teeth; nectar ring fleshy; limen cupuliform; ovary ovoid, glabrous; fruit globose, about 3.5 cm. in diameter, coriaceous. TYPE LOCALITY: Southern Brazil. ILLUSTRATION: Mart. Fl. Bras. 13, pt. 1: pi. 128, f. 5. DISTRIBUTION: Eastern Brazil to Paraguay. BRAZIL: "Southern Brazil," Sello 358 (B, BM, K, type). Minas Geraes: Perna de Pao, Gardner 4690 (BM, K). Matto Grosso: Cuyaba, Malme in 1902 (S), in 1903 (S). Santa Catharina: Ule 925 (B, N). PARAGUAY: Conception, Hassler 7498 (BM, type collection of P. violacea L albiflora). This is one of the species that have been confused with P. subpeltata (P. alba). The presence of dentiform processes on the inside of the operculum, suggesting the fringe on the outside of the operculum, characteristic in the section Kermesinae, distinguishes it from near relatives. The petiolar glands in the specimens cited above are more elongate than is shown in Masters' illustration. 280. Passiflora subulata Mast, in Mart. Fl. Bras. 13, pt. 1: 566. 1872. Passiflora platyceras Harms, Repert. Sp. Nov. 18: 298. 1922. Plant glabrous throughout; stem terete, glaucescent; stipules semi-oblong-lanceolate, 2 to 3.5 cm. long, 1 to 1.5 cm. wide, acute and mucronulate at apex, rounded at base, oblique; petioles 2 to
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THE UNIVERSITY OF ILLINOIS
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THE AMERICAN SPECIES OF PASSIFLORAC
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PRINTED IN THE UNITED STATES OF AME
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LIST OF EXSICCATAE The numbers in p
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Synonyms in italics. INDEX Page num
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UNIVERSITY OF ILLINOIS-URBANA
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