3>^y O 1 



\ N I C . ' 



G. 



>. T 



BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



Vol. XVII.] New York, August 12, 1890. [No. 8. 



A Descriptive List of Species of the Genus Heucfiera. 



4 



r.v W.M. E. Whi:k.i.ock. 



The genus is accepted as defined by Bentham and Hooker, 



Gen. PI. i. 638. 



The description of the calyx given below, Including its dimen- 

 sions, refers in every case to the calyx at the time of flowering ; 

 the fruiting calyx being, as a rule, much larger and quite differ- 

 ent in form. 



r 



^ I. Stamens exsertcd sooner or later. 



f Flowering calyx i" to i]4" long. 



* Tnilorescence loosely priniculate or cymose-paniculate. 



T. //. RKgelii . 



2. Jf. glabra. 



3. //. jnicrantha. 



4. //. villas a, 



^'^ Inflorescence cymosc-subspicate, 



5. //. nibtiitiJJora, 



*** Innoresccnce a long, narrow panicle ; Howcrs clustered 



6. //. pilosissinia. 



\\ Flowerin,L!: calyx ij'^" to 3" long. 



* Tnnurcsccnce a large, densely flowered, narrow thyrsus 



7. //, inax'ujia. 



"^ Inflorescence paniculate or cymose-paniculate. 



8. //. AuiiriciDia, 



9. //. lovgipctala. 

 ID. //. Orizabensis. 



11. //. rtibi'Siiiis. 



••'■"* Inflorescence glomerate-spicate, often secuud. 



12. //. hractcaia, 



m Flowering calyx 3" to 5" long. 



Inflorescence an open, spreading panicle. 



13. 11, pubcsccns. 

 ** Tnllurcscence a narrow panicle. 



14. //. hispida^ 



