132 NORTH AMERICAN FLORA [Volume 25 



Leaf -blades conspicuously silvery-silky beneath ; larger petals with 

 oblong or ovate-oblong blades. 2. B. discolor. 



I n 11< irescence shorter than the leaves ; crests of the samara-body less 

 than 0.5 mm. high. 3. B. gualemalensis. 



Samara-body crestless. 4. B. acapulcensis. 



Ultimate flower-clusters umbel-like. 

 Corolla pink or purplish. 



Leaf-blades not reticulate ; sepal-glands, when present, rounded on 

 the back ; corolla less than 2 cm. wide. 

 Samara-body rugose-tuberculate. 5. B. pauciflora. 



Samara-body spiny-tuberculate. 



Calyx bearing 8 glands. 6. B . argenlea. 



Calyx glandless. 7. B.Schoiiibiirgkiana. 



Leaf -blades reticulate, especially beneath ; sepal-glands longitudi- 

 nally grooved on the back ; corolla over 2 cm. wide. 8. B. speciosa. 

 Corolla yellow. 9. B. lucida. 



1. Banisteriopsis cornifolia (H.B.K.) C. B. Robinson. 



Heleropteris cornifolia H.B.K. Nov. Gen. & Sp. 5: 165. 1822. 



Banisleria cornifolia Spreng. Syst. 2 : 388. 1825. 



Banisleria maracaybensis A. Juss. Ann. Sci. Nat. II. 13: 285. 1840. 



7 Banisleria maracaybensis angustifolia Griseb. Vidensk. Meddel. 1853: 46. 1853. 



Banisleria maracaybensis elliplica Niedzu. Gen. Banist. 1 : 5. 1900. 



Banisleria maracaybensis cornifolia Niedzu. Gen. Banist. 1 : 5. 1900. 



Leaf-blades oblong, elliptic, or lanceolate, mostly 9-18 cm. long, acute or short-acumi- 

 nate, shining above, dull, vein}', and thinly pubescent beneath with reddish hairs, short- 

 petioled ; sepals ovate or oblong-ovate, 2-2.5 mm. long, the glands fully one half the 

 length of the sepal-body; larger petals 4-7 mm. long, with suborbicular blades; samaras 

 2.5-3.5 cm. long, the wing 1 cm. wide or more, the body with lateral crests over 0.5 mm. 

 high. 



Type locality : Ibague, Colombia. 



Distribution : Nicaragua and Costa Rica to Colombia. 



2. Banisteriopsis discolor (Donn. Smith) Small, sp. nov. 



Banisleria cornifolia discolor Donn. Smith, Bot. Gaz. 24 : 391. 1897. 



Leaf-blades ovate, 6-12 cm. long, rounded at the apex, acute or slightly acuminate, 

 deep-green, glabrousaud slightly veiny above, when dry, permanently silvery-silky beneath, 

 mostly rounded at the base, short-petioled ; sepals oblong, 3.5-4 mm. long, the glands 

 about one half the length of the sepal-body; larger petals 4.5-5.5 mm. long, with oblong 

 or ovate-oblong blades ; mature samaras not seen. 



Type locality : San Pedro de la Calabaza, Costa Rica. 



Distribution : Costa Rica. 



3. Banisteriopsis guatemalensis (Niedzu.) C. B. Robinson. 



Banisleria gualemalensis Niedzu, Gen. Banist. 1 : 6. 1900. 



Leaf-blades elliptic to obovate, mostly 5-11 cm. long, abruptly short-acuminate, smooth 

 above, except the impressed larger veins, short-petioled ; sepals and petals not seen ; 

 samara about 2.5 cm. long, the wing relatively wider than that of B. cornifolia, the body 

 with lateral crests less than 0.5 mm. high. 



Type locality : Salatua, Guatemala. 

 Distribution : Known only from the type locality. 



4. Banisteriopsis acapulcensis (Rose) Small. 



Heleropteris acapulcensis Rose, Contr. U. S. Nat. Herb. 5 : 139. 1897. 



Leaf-blades lanceolate or oblong-lanceolate, 7-15 cm. long, acute or acuminate, dark- 

 green above, yellowish-green beneath, glabrous, acutish or rounded at the base, short- 

 petioled ; sepals oblong or oblong-ovate, 3-3.5 mm. long, the glands fully one half the 

 length of the sepal-body ; larger petals 5-5.5 mm. long ; samaras 2.5-3 cm. long, the wing 

 1 cm. wide or less, the body rounded, crestless. 



Type locality : Near Acapulco, Mexico. 

 Distribution : Known only from the type locality. 



