124 NORTH AMERICAN FLORA [Volume 25 



notched or mueronate at the apex, striate-veined, mostly obtuse at the base, short-petioled ; 

 sepals ovate, 2-2.5 min. long, the glands about one half the length of the sepal-body ; 

 petals violet, the larger ones 4-5 mm. long, the blades suborbicular or orbicular-ovate, undu- 

 late or undulate-crenulate ; samaras 12-26 mm. long, the upper wings oblong, the lower 

 wing ovate. 



Type locality : Jamaica. 



Distribution: Bahamas; Cuba; not recently collected in Jamaica. 



Illustrations: Jacq. Obs. Bot. pi. 56; Gaertn. Fruct. pi. 116. 



2. Triopteris paniculata (Mill.) Small. 



Malpighia paniculata Mill. Gard. Diet. ed. 8. Malpighia no. 6. 1768. 

 Triopteris jamaicensis Sw. Obs. 183. 1791. Not T, jamaicensis L. 1753. 

 Bunchosia paniculata DC. Prodr. 1 : 582. 1824. 



Leaf-blades narrow, oblong-ovate or oblong-lanceolate, mostly 3-9 cm. long, obtuse or 

 acutish, reticulate-veined, rounded or subcordate at the base, short-petioled; sepals ovate, 

 3-3.5 mm. long, the glands about one half the length of the sepal-body; petals yellow or 

 purplish, the larger ones 5-6 mm. long, the blades broadly suborbicular orreniform, undu- 

 late ; samaras 14-18 mm. long, the upper wings oblong, the lower one oblong or oblong- 

 lanceolate. 



Type locality : Jamaica. 



Distribution : Jamaica ; apparently also in Santo Domingo. 



3. Triopteris ovata Cav. Diss. 431. 1790. 

 Leaf-blades broad, ovate, 2-7 cm. long, obtuse, abruptly pointed or notched at the 

 apex, glabrous, thin, somewhat shining, reticulate-veined, subcordate at the base, short- 

 petioled; sepals oval, 1.5-2 mm. long, the glands fully one half the length of the sepal- 

 body or nearly as long as it; petals yellowish, the larger ones 2.5-3 cm. long, the blades 

 oblong to ovate, undulate ; samaras not seen. 



Type locality - : Santo Domingo. 



Distribution: Santo Domingo. 



Illustrations : Cav. Diss. pi. 259 ; Arch. Mus. Paris 3 : pi. IS, f. 2S. 



4. Triopteris Brittonii Small, sp. nov. 

 Leaf-blades ovate, usually broadly so, mostly 4-10 cm. long, markedly acuminate, 

 reticulate-veined, bright-green and somewhat shining above, dull and paler beneath, cordate 

 at the base, short-petioled; sepals ovate, about 2 mm. long, the glands full)' one half the 

 length of the sepal-body; petals purplish, the larger ones 4.5-5 mm. long, the blades sub- 

 orbicular, undulate and sometimes irregularly toothed ; samaras not seen. 



Type collected on Spur Tree Hill, near Mandeville, Jamaica, September 2, 1907, N. L. Britton 

 1069 (herb. N. Y. Bot. Gard.). 



Distribution : Known only from the type locality. 



4. TETRAPTERIS Cav. Diss. 433. 1790. 



Climbing or trailing shrubs, with much-branched stems. Leaves opposite, with incon- 

 spicuous deciduous stipules ; blades leathery or membranous, entire or rarely glandular- 

 toothed, glabrous or sparingly pubescent, reticulate-veined, but usually inconspicuously so, 

 petioled. Calyx with 8 glands ; sepals broad, persistent, the glands elongate, not attached 

 to the side of the sepal-body, sessile. Corolla yellow ; petals 5, the blades oblong to orbicu- 

 lar, entire, but commonly undulate, or toothed. Stamens 10, all anther-bearing ; filaments 

 triangular to subulate ; anthers broad. Ovary 3-lobed. Styles 3, distinct, equal or nearly 

 so. Samaras 3 together, each 4-winged, X-shaped, the two upper wings usually larger than 

 the two lower ones. 



Type species, Tetrapteris inacqualis Cav. 



Glands much shorter than the sepal-body, usually about one half as long. 

 Blades of the petals entire or merely undulate ; free portions of the 

 filaments triangular or lanceolate. 

 Samara-bodies with a median ridge. 1 . T. inacqualis. 



Samara-bodies with a median wing-like keel. 2. T. citrifolia. 



