Part 2, 1910] MALPIGHIACEAE 151 



maturity ; sepals oblong to lanceolate, 3-5 mm. long ; corolla yellow, the larger petals 7-12 

 mm. long, the blades mostly ovate ; capsules 3.5-4.5 mm. long, the faces scarcely wrinkled. 



Type locality : Acambaro, Guanajuato. 



Distribution : Mexico to Panama ; naturalized throughout the West Indies. 



Illustrations : Cav. Ic. pi. 489 ; H.B.K. Nov. Gen. & Sp. pi. 452. 



2. Thryallis multicaulis (A. Juss.) Kuntze, Rev. Gen. 1: 89. 1891. 



Galphimia multicaulis A. Juss. Ann. Sci. Nat. II. 13 : 327. 1840. 



Plants with many short simple or sparingly branched stems ; leaf-blades ovate to ob- 

 long, 1.5-5 cm. long, obtuse or abruptly pointed at the apex, more or less glaucous, 

 especially pale beneath, glabrous, abruptly narrowed at the base, short-petioled, the glands 

 borne at the apex of the petiole or on the base of the blade ; panicle narrow, the rachis 

 finely pubescent; sepals oblong or nearly so, 2.5-3 mm. long; corolla yellow, the larger 

 petals S-10 mm. long, the blades ovate or oblong-ovate; capsules 3.5-4 mm. long, the 

 faces nearly smooth. 



Type locality : Mexico. 

 Distribution : Mexico. 



3. Thryallis sessilifolia Rose, Contr. U. S. Nat. Herb. 

 12 : 281. 1909. 

 Galphimia sessilifolia Rose, Contr. U. S. Nat. Herb. 3 : 313. 1895. 



Plants with rather short glabrous branches; leaf-blades ovate to orbicular-ovate, 1.5- 

 3.5 cm. long, abruptly pointed at the apex, glabrous, cordate or subcordate at the base, 

 sessile or nearly so, glandless ; panicles narrow, rather closely few-flowered, the rachis 

 finely pubescent ; sepals oblong, about 3 mm. long, glabrous ; corolla yellow, tinged with 

 red, the larger petals 8-10 mm. long, the blades oblong to ovate-oblong ; capsules 3-3.5 

 mm. long, the faces smooth or nearly so. 



Type locality : Oaxaca. 



Distribution : Known only from the type locality. 



4. Thryallis Palmed Rose, Contr. U. S. Nat. Herb. 12 : 281. 1909. 



Galphimia glandulosa Rose, Contr. U. S. Nat. Herb. 5 : 137. 1897. Not G . glandulosa Cav . 1799. 

 Plants with many rather long branches ; leaf-blades oblong to oblong-lanceolate, 2.5-6 

 cm. long, obtuse or acute, glabrous, slightly glaucous beneath, acute at the base, slender - 

 petioled ; panicles relatively short, narrow, simple or branched, rather closely flowered, the 

 rachis glabrous ; sepals oblong, 3-3.5 mm. long, glabrous ; corolla yellow, the larger petals 

 6-7 mm. long, the blades ovate or oblong-ovate ; capsules about 5 mm. long, the faces in- 

 conspicuously striate. 



Type locality : Near Acapulco, Guerrero. 

 Distribution : Known only from the type locality. 



5. Thryallis humilis Rose, Contr. U. S. Nat. Herb. 12 : 280. 1909. 

 Plants with elongate branches ; leaf-blades ovate, elliptic, or elliptic-ovate, 4-7 cm. 

 long, acute or obtuse, glabrous, very glaucous beneath, acute, often cuneate, at the base, 

 those of the lower leaves short-petioled, those of the upper ones sessile or nearly so ; 

 panicles elongate, rather loosely flowered, the rachis pubescent; sepals oblong to ovate, 

 3-3.5 mm. long, glabrous ; corolla yellow, the larger petals 9-10 mm. long, the blades tri- 

 angular-ovate ; capsules not seen. 



Type locality : Between Concepcion and Acaponeta, Tepic. 

 Distribution : Known only from the type locality. 



6. Thryallis dasycarpa Small, sp. nov. 

 Plants with elongate glabrous branches ; leaf-blades oblong-ovate to oblong, 1-2.5 cm. 

 long, or larger on the lower part of the plant, obtuse or abruptly pointed at the apex, paler 

 beneath than above, abruptly narrowed or nearly truncate at the base, short-petioled, the 



