129 . 



to 5 cm. long, long-acuminate, mostly rounded at base, dark given and becoming 

 nearly glabrous above, very pale and covered with dense close tomeutum beneath, 

 palmately 3 to 5-veined, somewhat irregularly serrate; inflorescence an open sp read- 

 ing panicle; buds club-shaped, densely stellate; sepals -1, linear, 6 mm. 1 ug. with a 

 small appendage near the apex-; petals 1, minute, 2 mm. long; stamens about 2J; 

 stipe none; fruit 10 mm. in diameter, including the fringe of plumose hairs; the 

 body orbicular, 2 mm. in diameter, densely stellate, and with a few scattered plumose 

 hairs. 



Collected hyDr. E. Palmer near Acapulco, 1894 (No. 157); also by .Mr. K. \V. Nelson 

 between Copala and Juchitango, (iuerrero, February 9, 1895 (No. 2298). 



Explamation of Plate.— Fig. 1, flowering p;inic:l<! with leaves, scale § ; tig. 2, fruit ; fig. 3, seed ; tigs. 

 2 ami \i, scale 1\. 



A SYNOPSIS OF THE SPECIES OF WIMMERIA. 



The genus was established in 183 1, two species, W. concolor and W. 

 discolor, being described. It was monographed by Kadlkofer in LS7.S, 

 and the two species of Schlechtendal were increased to six. The \V. 

 con/ma of Hemsley and the very recent species W. eyclocarpa bring 

 the number up to eight. Of these eight species seven are Mexican. 

 Until 188o the genus was entirely unrepresented in the National Her- 

 barium. We now lack but one of the Mexican species, this one of the 

 original ones, II'. discolor. The collections of Pringle, Palmer, and Neb 

 son have just added three of the rarest species to our collection. 



The following key to the .Mexican and Central American species, taken 

 largely from liadlkofer, will be found useful in disentangling herbarium 

 specimens: 



$ Enpai.oi-ius; fruit longer than broad, ovate-oblong, narrowly winged. 

 Wimmeria concolor Sell lech t. Linnaea, 6:428. 1831. 



Tins species is represented in the National Herbarium by Mr. Pringlee No. 3706 

 from San Luis Potoai (1891). 



Wimmeria discolor Schlecht. Linnaea. 6:428. 1831. 



I do not know this species. It must be near the above. The type was collected 

 at Papain la, State of Vera Cruz. 



(iENDOioi'iii's: fruit shorter than broad, stiborbienlar, broadly winged. 



y I. car en pubescent. 

 ■+■ Leaves large, thin, serrulate. 

 Wimmeria eyclocarpa Kadlk. Bot. Gaz. 18:199. 189:!. 



We, have duplicates of the type which were distributed by (.'apt. John Donnell 

 Smith. 



*■ *- Leares small, thickish. 

 ** /Hade of leaf glabrous or becoming glabrate but with the petiole (as are the peduncles 



and j/oiing branches) puberulent, crenate; anthers obtuse. 

 Wimmeria confusa Hemsl. Diag. PI. Nov. fasc. 1 : li. 1878. 



This species is represented in the National Herbarium by the following specimens: 

 Dr. Palmer's Nos. 261 and 262 from southwestern Chihuahua (1885); No. 368 i'rom 

 Jalisco (1886); No. 648 from Alamos (1890), and No, 1598 from Lodiego (1891). 



** ++ /Uad( °f leaf pubescent on both sides, entire or serrulate, smaller than the last ; 



anthers apieulatc. 

 Wimmeria pubescens Radlk. Sit/Jj. Math. Phys. Akad. Muench. 8: 378. 1878. 

 Shrub 2.1 to 3 meters highj anthers broadly ovate, shortly acuminate. 



