22 Dr. W . Arnott on some new or rare Indian Plants. 



vis ct plus rninusvr puhesccntibus. Stipulae inter pctiolarcs bifida;. Ha- 

 cemi simplices, axUlares, folio breviores , pcdunculati , bracteati. Flares 

 pedicellati ; pedicellus basi unibracteolalus. 



1. N. Wight ii (Am.) ; stipularum segmentis ovatis, integris, apice 

 subulato cuspidatis, bracteis vel integris vel basi utrinque laci- 

 nulis setacea unica auctis. Wight, Cat. n. 2473. 



Hub. ad Courtallum, Wight. 



Caulis 3 — 12 poll, altus, inferne nudus, ferrugineo-pubescens. 

 Racemi cernui, folio 2 — 3-plo breviores : pedicellus calyce duplo bre- 

 vior. Calycis laciniae ovata?, corolla paullo tantum longiores : ova- 

 rium 10-costatum, 10-sulcatum, at fructus 5-angulatus, faciebuspla- 

 niusculis. 



2. N. ceylanicus (Hook.) ; stipularum segmentis lanceolatis atte- 

 nuatis latere exteriore pinnatisectis, bracteis pedunculi palmati- 

 sectis, laciniis sub 5 lateralibus tenuioribus. 



Hob. in insula Ceylon, ad " Adam's Peak," Walker. 



Caulis subnullus. Racemi folio tantum paullo breviores : pedi- 

 cellus calycem suboequans. Calycis laciniae oblongse, corollam duplo 

 superantes : ovarium et fructus omnino ut in antecedente. 



That this genus is allied to Argostemma*, Wall., will not I 

 presume be disputed ; indeed, trusting to the generic charac- 

 ter alone which is given of that genus, it might be doubted if 

 the two were truly distinct. In Aryostemma, however, the 

 calyx segments are green, and considerably shorter than the 



* The following is a new species of Argostemma, the only one yet disco- 

 vered in the Peninsula of India, found at Courtallum, in 1835, by Dr. 

 Wight. 



A. courtallense (Arn.) ; caule basi repente, supra terram erecto, simplici 

 pubescente, foliis utrinque glabris, verticillatis terminalibus vel quaternis, 

 duobus oppositis aut tribus late ovatis subaequalibus castera oblonga multo 

 superantibus, nunc quinto inferiore, vel rarius ternis subaequalibus, stipulis 

 obsoletis, umbella pedunculata 2 — 6-flora foliis majoribus breviore, pedicellis 

 calycibusque pubescentibus, floribus 4-meris, filamentis declinatis, antlieris 

 discretis, versus apicem rima duplici dehiscentibus. Wight, Cat. n. 2474. 



Corolla alba, basi annulo viridi 4-fido lobis emarginatis notata, calycis seg- 

 menta ovata acuta duplo superans: laciniae ovatae, acu f ae. Ab hoc difFert 

 affine A. sar?netitosum t Wall., foliis baud verticillatis at tantum approximatis, 

 cujusque pari valde insequalibus, subtus ad nervos villosis, corolla caJycem 

 5-plo superante ac laciniis lanceolatis : convenit autem stipularum defectu, 

 floribus tetrameris, calyce pubescente, corolla basi viridi annulata, staminibus 

 declinatis, antheris liberis. 



DeCandolle, in liis generic character, describes the anthers as cohering at 

 the apex, which dees not seem to be the case in any of the 6pecies noticed 

 by Dr. Wallicb, who constituted the genus. 



