3G THK JUl'HNAL OF BUTANE 



the wings and keel, and a pod marked on the outside with numerous 

 transverse lamelUe ; it is a native of the Caribbean Is. D. altissimus, 

 on the other hand, lias leaves glabrous on both sides, a long peduncle 

 more than 12 feet in length, blue-purple tiowers, a standard adpressed 

 to the wings and keel and nearly as long as these ; it is a native 

 of ^Nlartinicpie. It is also of interest to note that Jaequin indicates 

 as doubtful the synonym from Kheede already quoted. Hence 

 it is evident that I), (dtisaimus Jacq. as indicated by the Sel. Stirp. 

 Amer. and Ed. pict. is the same as the plant of Browne and 

 Plukenet, on which Linnieus based his D. iirens. Jacquin's D. urens 

 represents a second species. 



In Species Plantanon (ed. 2, 1020), Linnseus, under D. iirens, adds 

 to the citations previously given in the Systema from Browne & Plu- 

 kenet, others as follow : — 



1. '• rlacquin Amer. 27," /. ^. Enum, PI. Carib. 27. 



2. '• Phaseolus brasilianus cte, Sloane Jam. 68,, Hist, i, 178," which 

 latter, as the specimen in Herb, Sloane (iii. 69) shows, is a distinct 

 species from the plant of Browne & Plukenet, and has pods marked 

 with numerous tmnsverse lamellae, leaves tomentose beneath, and 

 spreading erect standard : it is, in fact, D. itrens Jacq. (Sel. Stirp, 

 Amer.) non L. Syst. 



3. " Phaseolus hirsutus &c. Plum. Sp. 8, ic. 222," which is the 

 plant recently named by Urban (Symb, Ant. iv. 311) Pachyrrhizus 

 erosus. 



4. " Mueuna. Maregr. Bras. 19," which is the same as Sloane's 

 specimens. 



5. "Kaku valli. liheed. MaL10[reeteS]p.63," which is D.giganfea 

 AVilld. 



Willdenow (Sp. PI. ed. 4, 1042 (1800)), under B. vrens, repeats 

 the above synonymy and adds Jacq. Amer. 202, t. 182. f. 84 ; he also, 

 following Jaequin, adds to the description, •' folia subtus tomentosa 

 nitida." As already noted, he recognizes as distinct D. altissimus 

 Jacq. from Martinique (Hores violaceij. 



De CandoUe (Prodr. ii. 40o), in revising Adanson's genus J/wcw;i«, 

 follows Willdenow, retaining M. altissima for .lacquin's Martinique 

 jjlant (which he had not seen) with glabrous leaves and purple flowers,, 

 and M. vreti.s for the C^aribbean ]jlant with leaves tomentose beneath 

 and yellow flowers. 



From the above it will be seen that Dolichos Mrens Jacq. and 

 Mticuna iirens DC do not represent the original D.vrens L. Syst., but 

 a second well-characterized species which we propose to call Mucuna 

 Sloanei. The other species. 7). urens L., must be cited as Muci'3«^A. 

 IRKXS, nobis (non 1)(\). 



The confusion of names originated with Jaequin, who did not 

 apjjreciate on what liinnieuss £>. iirens was based and who also- 

 regarded his own D. olfissinms as identical with an Old yv''orld species*. 

 The confusion was continued by Linnteus in Sp. PI. ed. 2, and has- 

 been carried on by subsequent authors. 



Cliioria Zooplithnhnum (Syst. ed. 10, 1172) is presumably, from 

 the species-name and diagnosis, a synonym of Z). urens L. Linnaeus 

 quotes no reference, there is no specimen in the Linnean Herbariiun,. 

 and the name does not appear in the second edition of Sp. PI. 



