202 NORTH AMERICAN FLORA [Volume 25 



5. Esenbeckia Berlandieri Baillon, Adansonia 10 : 151. 1871. 

 Esenbeckia acapulcensis Rose, Contr. U. S. Nat. Herb. 5 : 111. 1S97. 



A small tree about 6 in. in height, with a trunk-diameter of 7.5-10 cm., glabrous 

 throughout with the exception of the puberulent inflorescence ; leaves alternate, digitately 

 3-foliolate, the leaflets oblong to obovate, 3.7-12.5 cm. long, 1.4-4.6 cm. broad, rounded at 

 the apex, and more or less decurrent on the petiolule to near its base ; flowers about 5- 

 5.5 mm. in diameter, in a short, broad, terminal panicle; sepals orbicular or nearly so, 

 minutely ciliate, glandular-dotted ; petals oblong-elliptic to oblong-ovate, sometimes obovate, 

 2.7-3 mm. long, 1.5-2 mm. broad, glandular-dotted; filaments subulate, accumbent in the 

 shallow grooves of the disk, the anthers ovate, cordate at the base; disk 1.2-1.5 mm. in 

 diameter ; capsule 3.5-5 cm. broad, deeply 5-lobed, ridged, sometimes beaked ; seeds 

 brownish. 



Type locality : Woods near Tampico, Tamaulipas. 

 Distribution : Tamaulipas and Guerrero. 

 Illustration : Contr. U. S. Nat. Herb. 5 : pi. 3. 



6. Esenbeckia litoralis Donn. Smith, Bot. Gaz. 23 : 242. 1897. 



A shrub (or tree?) with yellowish-brown branchlets spotted with small whitish lenti- 

 cels and leafy toward their ends ; young shoots, petioles, and panicles hispidulous ; 

 petioles 1-2 cm. long ; leaves digitately 3-foliolate ; leaflets pellucid-glandular, membra- 

 nous, obovate, the terminal one 5-11.4 cm. long and 4-6.3 cm. broad, the lateral leaflets 

 somewhat smaller, sessile, glabrous or nearly so above, hispidulous, especially on the 

 midrib, beneath, rounded or abruptly short-pointed, the tip obtuse, cuneate at the base, 

 the margin obsoletely crenate ; panicles terminal, racemiform, 3.7-5 cm. long, the branches 

 short; flowers 4.8-5.5 mm. broad, subglomerate ; sepals imbricate, hispidulous, oval to 

 nearly orbicular ; petals imbricate, hispidulous, oblong to elliptic, 3-3.5 mm. long, 1-1.3 

 mm. broad, obtuse at the apex, sparingly and minutely pellucid-glandular; stamens about 

 equaling the petals; filaments dilated below, accumbent in the shallow grooves of the disk, 

 the anthers cordate, apiculate ; disk 1.2-1.5 mm. in diameter; ovary immersed in the disk ; 

 style subulate, about 1 mm. long; capsule unknown. 



Type locality : Dry prairies along the coast of the Bay of Salinas, Comarca de Puntarenas, 

 Costa Rica. 



Distribution : Known only from the type locality. 



7. Esenbeckia pilocarpoides H.B.K. Nov. Gen. & Sp. 7 : 248. 1825. 



Polembrvum caslanocarpum A. Juss. Mem. Mus. Paris 12 : 541. 1825. 

 Pilocarpus Humboldlii Spreng. Syst. 4 s : 126. 1827. 

 Esenbeckia castanocarpa Griseb. Fl. Brit. W. Ind. 135. 1859. 



A tree sometimes attaining a height of 20 m., with terete, glabrous branches and 

 brownish bark ; leaves alternate, unifoliolate, rarely trifoliolate, oblong to oblong-ovate 

 or oblong-lanceolate, 1.14-1.75 dm. long, 4-7.5 cm. broad, usually rather obtusely short- 

 acuminate at the apex, rounded or acute at the base, glabrous, entire, reticulate-veined, 

 the midrib and primary veins prominent beneath, pellucid-glandular, somewhat lustrous 

 above, paler beneath ; racemes at the ends of the branches, axillary and terminal, solitary, 

 long-peduncled, pubescent, their branches few, short ; flowers about 8-10 mm. broad ; 

 pedicels bibracteate at the middle, the bracts subopposite, ovate, acute, concave, subcilio- 

 late ; calyx glabrous ; sepals imbricate, ovate to orbicular-ovate, obtuse, ciliate, concave ; 

 petals much exceeding the calyx, elliptic to nearly orbicular, 2.5-4 mm. long, 2-3.5 mm. 

 broad, yellow, glandular-punctate, spreading or reflexed ; filaments immersed in the deep 

 grooves of the disk ; anthers cordate, glabrous ; disk 3.5-4 mm. in diameter ; ovary 

 depressed, beset with fleshy tubercles ; style erect, rather short ; stigma clavate-capitate ; 

 capsule when ruptured about 2.5-3 cm. in diameter, bearing on the outside, conic, obtuse 

 tubercles 1-2 mm. long; seeds ovate, pointed, 9-10 mm. long. 



Type locality : Near Quetepe, Venezuela. 



Distribution : Martinique, Trinidad, and northern South America. 



Illustrations: H.B.K. loc. cil.pl.655; Schott, Rutac. pi. 5 ; Mem. Mus. Paris 12 \pl.28, f. 49. 



