i65 



Algue verte d'eau douce. 



Algues. 



N° 272 



3o. F. GAGNEPAIN 



de l'Asie orientale. 



Tiliac6es nouvelles ou peu connues 



Sloanea Hanceana Hemsley, in Hook. Ic. P/., sub tab. 2O28. 



Echinocarpus sinensis Hemsley, in Ann. Bot., IX (1895), 

 p. r4 7 . 



Arbor elata, ramis glabris vel partibus novellis tenuiter pilosis. Folia ad 

 apicem ramorum conferta, petiolata, lineari-lanceolata vel oblanceolata, 

 ad basin attemtata et abrupte rotundata, subemarginata y ad apicem grada 



4 



■ 



F.7 



Sloanea Hanceana Hemsley 



tim acuminata, acuta, margine acute serrato-mncronato, supra viridia 

 subtus pallescentia, utrinque glaberrima; nervi laterales 8 utrinque, mox 

 ramosi, ad marginem invicem confluentes, basi in axillis pilosi, venulis 

 utrinque conspicuis, retem densum efformantibus; petiolus teres, glaber- 

 rimus, gracilis, basi leviter dilatatus, apice eglandulosus. Inflorescentia 

 subterminalis, corymbosa, griseo et tenuiter pilosula, pedicellisgracilibus, 

 apice incrassatis, ebracteatis, unifloris, floribus disciformibus, latioribus 

 quam longioribus, luteis. — Sepala 4, rarius 5, ovalia, obtusa, basi vix 

 coalita, utrinque et brevissime albido-pilosula. Petala 40 , late ovata 

 utrinque pilosula, apice haud lacerata sed erosa vel 4-6 dentata, sepal 



