678 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



subentire, pale green ; petals 3 mm. long ; fruit 1 to 1.5 cm. broad. "Algodon- 

 cillo," "cedilla," " acedilla " (Sinaloa). 



The wood is used for various purposes and is reported to be durable if not 

 exposed to too abundant moisture. The name " algdoncillo " is said to refer 

 to the white fiber of the bark. 



6. Wimmeria pubescens Radlk. Situngsb. Math. Phys. Akad. Wiss. Miinchen 8: 



378. 1878. 



Veracruz; type from Consoquitla. 



Large shrub or small tree; leaves obovate, 1 to 3 cm. long, short-petiolate 

 or subsessile, rounded at apex, crenulate or subentire ; petals 2.5 mm. long ; 

 fruit 1 to 1.5 cm. broad, tinged with purple. 



7. Wimmeria microphylla Radlk. Bot. Centralbl. 15: 359. 1903. 

 Puebla. 



Shrub, 1.5 to 3 meters high ; leaves obovate or broadly obovate, 0.5 to 1.5 cm, 

 long, sessile or short-petiolate, rounded at apex, entire or crenulate; petals 

 2.5 mm. long ; fruit 1.5 cm. broad or less. 



2. ZINOWIEWIA Turcz. Bull. Soe. Nat. Moscou 32': 275. 1859. 

 The genus consists of a single species. 



1. Zinowiewia integ'errima Turcz. Bull. Soc. Nat. Moscou 32': 275. 1859. 



Morelos and Veracruz. Costa Rica. 



Small tree, glabrous throughout ; leaves opposite, petiolate, elliptic, ovate, 

 or ovate-elliptic, 4.5 to 10 cm. long, acute or acuminate, entire ; flowers very 

 small, numerous, in axillary cymes ; petals 5 ; stamens 5 ; fruit a samara, 

 1-seeded, about 2 cm. long, the wing apical, decurrent, obtuse ; wood white. 

 "Palo bianco" (Veracruz). 



3. MICRGTIIGPIS Wall. Numer. List 152. 1829. 

 Glabrous slirubs or trees ; leaves opposite, petiolate, persistent, estipulate, 

 entire; flowers in axillary cymes or fascicles, 5-parted; stamens 5; ovary 2 or 

 3-celled ; capsule coriaceous, 1-celled, bivalvate, 1-seeded. 



Cymes 4 to 7-flowered 1. M. occidentalis. 



Cymes 8 to 30-flowered 2. M. schiedeana. 



1. Microtropis occidentalis Loesener, Bot. Gaz. 24: 393. 1897. 

 Veracruz. Central America. 



Leaves oblong or oval-oblong, 6 to 13 cm. long, 2 to 5 cm. wide, obtusely 

 acuminate, cuneate at base, with about 6 pairs of lateral nerves ; flowers 3 mm. 

 broad, the petals whitish ; fruit oblong, 12 to 13 mm. long. 



2. Microtropis schiedeana Loesener, Bot. Jahrb. Engler 29: 98. 1900. 

 Type from Chiconquiaco, Veracruz. 



Leaves oblong or oval-oblong, 6 to 13 cm. long, 2 to 5 cm. wide, obtu.se 

 or obtusely short-acuminate, acute at base, the lateral nerves 7 to 9 pairs. 



4. EUGNYMUS L. Sp. PI. 197. 1753. 



Trees or shrubs ; leaves opposite, petiolate, persistent, entire or serrate ; 

 flowers perfect, in axillary cymes ; calyx 4 or 5-lobed ; petals 4 or 5, spreading ; 

 stamens 4 or 5 ; fruit a capsule, 3 to 5-celled, the cells 1 or 2-seeded ; seeds each 

 covered with an aril. 



The writer has seen no material of either of the following species. Ben- 

 tham's original descriptions afford no distinguishing characters, and conse- 

 quently only translations of the original descriptions are reproduced here. 



