Part 3, 1918] ALLIONIACEAE 195 
green, densely puberulent or glabrate, the lower part with prominent obtuse angles; stamens 8; 
fruit turbinate, 7-13 mm. long, 4-5 mm. in diameter, the 5 angles acute. 
TYPE LOCALITY: State of Rio de Janeiro, Brazil. 
. Distrieution: Brazil; widely cultivated in tropical and subtropical North America and natural- 
ized in Bermuda and apparently in Cuba, Salvador, and Guatemala. 
ILLUSTRATIONS: Rev. Hort. 1889: pl. 276; Garden 1894: pl. 962; Bot. Mag. #l. 4810; 
Gartenflora 1899: pl. 1463; Cycl. Am. Hort. f. 249. : 7 nanan 
Iv. COLIGNONIEAE. Herbs. Leaves opposite, the uppermost often 
colored. Flowers perfect, mostly umbellate; perianth small and incon- 
spicuous, the lobes simply valvate, persistent. Anthocarp dry, eglandular. 
Embryo curved. 
8. COLIGNONIA Endl. Gen. Pl. 311. 1837. 
Scandent herbs or shrubs, from tuberous roots, much branched, glabrous or pubescent. 
Leaves opposite, petiolate, the blades broad, entire, sometimes bright-colored. Flowers 
perfect, exinvolucrate, ebracteate, umbellulate or glomerate; perianth corolla-like or calyx- 
like, campanulate or funnelform, sometimes almost rotate in age, 3-5-parted, the lobes 
valvate, the tube 3-5-angled, in age coriaceous and the lobes connivent and sometimes alate. 
Stamens 5 or rarely 6, opposite the perianth lobes, slightly unequal, usually exserted; filaments 
filiform-subulate, connate at the base into a short cup; anthers didymous. Ovary subglobose 
to obovoid, sometimes slightly compressed; style filiform, exserted; stigma capitate or penicil- 
late. Anthocarp ellipsoid to fusiform, 5-costate or broadly winged. Seed with the testa 
slightly adherent to the pericarp; embryo semicircular to hippocrepiform, enclosing the copious 
farinaceous endosperm; cotyledons oblong-elliptic, incumbent; radicle elongate, descending. 
Type species, Abronia parviflora H. B. K. 
1. Colignonia parviflora (H. B. K.) Endl. Gen. Pl. 311. 1837. 
Abronia parviflora H. B. K. Nov. Gen. & Sp. 2: 216. 1817. 
Tricratus parviflorus Spreng. Syst. 1: 536. 1825. 
Plants herbaceous, glabrous, the branches 2 meters long or less, slender or stout, brownish 
or yellowish, striate; leaves numerous, often pseudo-verticillate, the petioles equaling or 
half longer than the blades; leaf-blades, broadly ovate to ovate-orbicular, 3-4.5 cm. long, 
2.8-4.5 em. wide, broadly rounded at both ends, entire, paler beneath; flowers umbellulate, 
the umbellules opposite in the axils or subumbellately arranged at the ends of the branches, 
densely many-flowered; pedicels 2-3 mm. long; perianth 3 mm. long, white, subangulate, the 
lobes elliptic to obovate-oblong, rounded at the apex; stamens 5; ovary subglobose, the style 
equaling the ovary, the stigma densely branched. 
Typr LOCALITY: Near Querchu in the Andes of Colombia. 
DISTRIBUTION: Panama and Colombia. 
ILLUSTRATION: H. B. K. Nov. Gen. & Sp. #1. 128. 
V. MIRABILEAE. Herbs, or the plants rarely suffruticose, unarmed. 
Leaves opposite. Flowers perfect, subtended by distinct or united bracts; 
perianth often bright-colored and corolla-like, the free portion withering and 
deciduous, the lobes induplicate-valvate. Stigma spheric or hemispheric. 
Anthocarp dry, coriaceous, often glanduliferous. Embryo curved, both the 
cotyledons developed. 
9. HERMIDIUM S. Wats. Bot. King’s Expl. 286. 1871. 
Perennial herbs, nearly glabrous, with dichotomous stems. Leaves opposite, short- 
petiolate, the blades broad, entire. Flowers perfect, exinvolucrate, bracteate, glomerate 
in head-like racemes in the axils and at the ends of the branches, each flower sessile upon a 
broad foliaceous bract; perianth campanulate, the limb obscurely 5-lobed, induplicate-plicate, 
