546 



111. Vtry transitional. Armature somewhat ii- 

 leiM-.lavly mixed ; the st.-pvk. luin^ usually rather more 

 i and unequal than in Groups 1. to' VI I. and IX.. 

 ile the glandular and acicular develop: tin is nu\< 

 or uncertain on st or pan., or on both st and pan. 



lireups X. to Xll.- JM.-prk. distinctly unequal. All arms 

 more mixed and scattered. 



Groups XIII. and XIV, Prk. scattered on tho round or 

 bluntly angled st., often weak and less unequal than in 

 Groups X. to XII. 



2. CONSPECTUS OF GBOUPS AND SPECIES. 



A. Groups I. to V. St. tall, glabrous or slightly hairy (some- 

 times more densely hairy in (ironp V. .lhsivi.oin--s\ not 

 always rooting. St.-prk. normally equal and confined to 

 angles. 



Group I. SUBBBKCTI. Root often sobolifei ;^ St. sub- 

 erect Tery rarely rooting at end (never apparently in H. / : 

 and It. sitberectus) ; glabrous or very nearly so. Has. Its. vt'ton 

 subsessile. Pan. racemose or subracemose. Sep. exun.aly 

 olive and subglabrescent, "with conspicuous white maririn. 

 Normally without bloom stkd. gl. or acu\ 



SECTION i. Prk. subulate or conical. L. often 6-7-nau . 

 Fr. dark red. (R. nessensis Hall.) 



H. jfissus Lindl. Prk. many slender subulate si -a tiered. 

 L. plicate hairy beneath. Bas" Its. sosile. iSt:;iii. and sty. 

 subequal. 



Jt. suber ectus Anders. Prk. few short conical with rather 

 long base, confined to angles, sometimes absent. L. plane i 

 green subglabrous. Bas. Its. subsessile. Stam. exceeding sty, 



SECTION n. Prk. compressed long-based. L. verv rarely 

 6-7-nate (except in H. Itogersii). Fr. black, 



JR. Itogersii Linton. L. 5-7-nate, finelv evenly serrate, 

 greyish-green. Term. It. long ovate-acuminate. Sty. and 

 stain, subequal. Fr.-sep. loosely reflexed. 



It. sulcatw Vest. L. all 5-nate. Term. It. oval long 

 pointed; bas. stalked. Pan. elongate. Stain, at first ex- 

 ceeding sty. Fr.-sep. reflexed. Very luxuriant. 



It. plicatm \Vh. & N. L. plicate. Term. It. broadly ovate- 

 cordate ; bas. subsessile. Pan. snhraeemose, rather short. 

 Stain, and sty. subequal. Fr.-sep. patent. 



