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398 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. XIX The position it should occupy within the genus, however, is still difficult to determine. The shape of the leaves and particularly the indument suggest species of Plectostemma section Cieca, but the operculum is not plicate and the petioles are glandless. The angular, stipitate fruit suggests P. gracilis, also of Plectostemma, but the seeds are quite different. Probably Masters' placing of it in Granadilla is the best disposition possible, though here it clearly represents a monotypic section. The corona is definitely 2-ranked, and there is no vestige of a third row of filaments or of tubercles on the smooth inside of the calyx tube. The operculum is entire at the margin, without crenations or undulations of any kind. Series 11. Kermesinae 235. Passiflora kermesina Link & Otto, Verhandl. Ver. Gartenb. Preuss. 2: 403. pi 15. 1826. Passiflora dentata Veil. Fl. Flumin. 9: pi 94. 1827. Passiflora Raddiana DC. Prodr. 3: 329. 1828. Decaloba kermesina M. Roemer, Fam. Nat. Syn. 2: 156. 1846. Decaloba dentata M. Roemer, Fam. Nat. Syn. 2: 156. 1846. Plant glabrous throughout; stem terete, slender; stipules subreniform, 1 to 2.5 cm. long, 0.5 to 1.2 cm. wide, rounded at both ends, aristulate at apex, glaucous beneath; petioles up to 4 cm. long, bearing 2 to 4 scattered, filiform glands 1 to 2 mm. long; leaves 4 to 8 cm. long, 5 to 10 cm. wide, 3-lobed to slightly below middle (lobes oblong, 1.5 to 3 cm. wide, rounded or acutish, glandular in sinuses), truncate or cordulate at base, membranous, dark green above, glaucescent or reddish beneath; peduncles 9 to 15 cm. long, slender; bracts 3, ovate, 3 to 5 mm. long, 2 to 3 mm. wide, petiolate (petiole 1 to 1.5 mm. long), scattered along upper half of peduncle; flowers 6 to 8 cm. wide (expanded); calyx tube short-cylindric-campanulate, about 1 cm. long, ventricose at base, the sepals and petals at first radiate, at length reflexed, red or scarlet; sepals linear-oblong, 3.5 to 4 cm. long, 0.5 to 0.7 cm. wide, obtuse, ecorniculate; petals similar to and slightly longer than sepals; corona filaments filiform, violet-purple, densely massed in 3 or 4 series, the outermost about 5 mm. long, the inner barely 3 mm. long, erect; operculum membranous, about 3 mm. high, plicate, bearing a fringe of filaments about 2 mm. long on outer surface just below the crenulate margin; nectar ring annular, fleshy; limen tubular, closely surrounding base of gynophore; gynophore slender, glaucous. about 2 mm. long; ovary ovoid,
AMERICAN PASSIFLORACEAE 399 TYPE LOCALITY: Rio de Janeiro, Brazil at Berlin). (type a plant cultivated ILLUSTRATIONS: Verhandl. Ver. Gartenb. Preuss. 2: pi. 15; Veil. Fl. Flumin. 9: pi. 94; Bot. Reg. 19: pi. 1633; Bot. Mag. 63: pi. 3503; Paxton, Mag/1: pi. opp. p. 151; Mart. Fl. Bras. 13, pt. 1: pi. 126; Nicholson, Illustr. Diet. Card. 3: 32. /. 37. DISTRIBUTION: Eastern Brazil, from Bahia to Rio Grande do Sul ; frequently cultivated in Europe. BRAZIL: Gaudichaud (P); Sello (B); Bowie & Cunningham 82 (BM) ; Raddi (Gen, type of P. Raddiana) ; Freyreis (S) ; Mikan (Brux). Pernambuco: Picket 2202 (B). Piauhy: Serra da Lag6a, Ule 7465 (B, K). Bahia: Bahia, Blanchet 1747 (BM, Gen), 3303 (B, BM, Bo, Gen, Go, K, V, Y) ; Klotzhky (B). Minas Geraes: Schott (V) ; Pohl (V). Vicosa, 700 meters, Mexia 4443a (N). Rio de Janeiro: Corcovado, Gardner 48 (BM, K); St. Hilaire 177 (P); Miers 3097 (K); Patschke 191 (B). Andarahy Grande, Glaziou 13912 (B, BM, Gen, K, N, P). Rio de Janeiro, Widgren 131 (S) ; Riedel & Luschnath 716 (N). Rio Grande do Sul: Hamburg-Berg, Lindman A591 (S). The following specimens appear to represent hybrids between P. kermesina and P. caerulea: BRITISH GUIANA: British Guiana Herb. 130 (EG). BRAZIL: Rio de Janeiro: Corcovado, Glaziou 3018 (Brux, Cop, N, P). Maua, Ule 3796 (B). This and the following seven species have relatively small, dissitate bracts and a more or less plicate operculum, characters suggestive of the subgenus Plectostemma. The large, showy flowers, the corona, and the limen indicate a closer relationship with Granadilla. Possibly these eight species should be placed in a separate subgenus, but certain considerations make this seem inadvisable: P. Giberti, which surely is closely related to P. naviculata, has a plicate operculum, with a fringe of filaments attached on the outside, but the bracts are verticillate, foliaceous, and borne close to the base of the flower; in other species of Granadilla the margin of the operculum is slightly crinkled. Passiflora Loudoni, a horticultural species, is probably a hybrid between P. kermesina and P. racemosa. 236. Passiflora Lehmanni Mast. Journ. Bot. Brit. & For. 23: 115. 1885. Plant glabrous throughout; stem terete; stipules semi-ovate, 1.5 to 2 cm. long, about 1 cm. wide, aristulate at apex, rounded at base,
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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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UNIVERSITY OF ILLINOIS-URBANA
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