242 NEW SPECIES OF ACROTREMA. 



aculeatis marginibus paucidentatis, Petioli brevissimi. Pedicelli 

 \-\\ unc. longi. Flores \ unc. lati. Sepala hirsuta. Ovaria basi 

 connata, multiovulata. 



The varieties of this plant (sent under the same number by Mr. 

 Thwaites) appear very distinct at first sight ; but a careful examination 

 of the evolution of the foliage shows that the characters which distin- 

 guish them are not specific. 



Plate Vf,A. Kg. 1, flower j 2, ditto, spread open; 3, stamen; 4, 

 carpels ; 5, vertical section of a carpel : — all magnified. 

 2. Acrotrema dissectnm^ Thwaites \ sericeo-pilosum, foliis lanceolatis 

 abrupte pinnatisectis, pinnis majoribus pinnatifidis segmentisque sc- 

 taceo-acuminatis minoribus interjectis parvis lanceolatis insequalibus, 

 racemis brevissimis, pedicellis elongatis paten tim pilosis. (Tab. 



IV. B.) 



-I* 



Hab. Prope Hellessee, ins. Zeylanise, Thwaites, n. 3393. Mai, 1855. 



RJdzoma breve, crassiusculum. Folia brevissime petiolata, 3-5 unc. 

 longa, 1 unc. lata, membranacea, subtus albido-sericea, pinnis breve 

 gracile petiolulatis obovato-lanceolatis. Flores \ unc. lati. Carpella 

 polysperma, serainibus grosse foveolatis. 



3. Acrotrema lyratum, Thwaites; glabrum v. parce pilosura, foliis co- 

 riaceis basi pinnatifidis lobulis rotundatis despectis superne in lanu- 

 nam amplam oblongam obtusam basi cordatam dilatatis margine sub- 

 denticulatis, racemis longe pedunculatis, bracteis imbricatis recurvis, 

 pedicellis elongatis floribusque glabris, ovuKs plurimis. 



Hab. In insula Zeylanise ad Hinidoon Korle, Thwaites, n. 3392. Mai. 



1855. 



Wight. — Rhizoma crassum 



ascendens. Folia 3-10 unc, longa, lyrato-pinnatifida, laminae parte 

 superiore maxima, 2-7 unc. longa,'2-4 lata, nervis crassis horizon- 

 taliter patentibus apicibus furcatis, parte inferiore laminse (v. parte 

 superiore petioli) pinnatifida, segmentis parvis orbiculatis late adnatis 

 despectis. Peiiolus brevis, crassus, basi in stipula vaginante dilatata. 

 Injlorescentia glabra. Fedunctilus 1-3 unc. longus, nudus, superne 



imbricatis 



de- 



curvi. Flores fere \ unc. lati. 

 Variat irmgniter siafura. 



Besides the above, we have from Mr. Thwaites one specimen of an- 

 other Acrotrema, numbered 3114, which, with the leaves of ^. lanceo- 



