546 
APPENDIX I. 
(Iroup VIII. — Very transitional. Armature somewhat 
irregularly mixed ; the st.-prk. being usually rather more 
scattered and unequal than in Groups I. to VII. and IX., 
while the glandular and acicular development is mostly weak 
or uncertain on st. or pan., or on both st. and pan. 
Groups X. to XII. — St.-prk. distinctly unequal. All arms 
more mixed and scattered. 
Groups XIII. and XIV. — Prk. scattered on the round or 
bluntly angled st., often weak and less unequal than in 
Groups X. to XII. ^ 
2. Conspectus of Groups and Species. 
A. Groups I. to V. — St. tall, glabrous or slightly hairy (some- 
times more densely hairy in Group V. Discolokes), not 
always rooting. St.-prk. normally equal and confined to 
angles. 
Group I. Suberecti. Eoot often soboliferous. St. sub- 
erect, very rarely rooting at end (apparently never in R. fissus 
and R. suhe7~ectus) ; glabrous or very nearly so. Bas. Its. often 
subsessile. Pan. racemose or subracemose. Sep. externally 
olive and subglabrescent, with conspicuous white margin. 
Normally without bloom stkd. gl. or acic. 
. Section i. Prk. subulate or conical. L. often 6 — 7-nate. 
Fr. dark red. {R. nessensis Hall.) 
R. fssus Lindl. Prk. many slender subulate scattered. 
L. plicate hairy beneath. Bas. Its. sessile. Stam. and sty. 
subequal. 
R. suberectus Anders. Prk. few short conical with rather 
long base, confined to angles, sometimes absent. L. plane pale 
green subglabrous. Bas. Its. subsessile. Stam. exceeding sty. 
Section ii. Prk. compressed long-based. L. very rarely 
6 — 7-nate (except in R. Rogergii). Fr. black. 
R. Rogersii Linton. L. 5 — 7-nate, finely evenly serrate, 
greyish-green. Term. It. long ovate-acuminate. Sty. and 
stam. subequal. Fr.-sep. loosely reflexed. 
R. snlcatus Vest. L. all 5-nate. Term. It. oval long 
pointed ; bas. stalked. Pan. elongate. Stam. at first ex- 
ceeding sty. Fr.-sep. reflexed. Very luxuriant. 
R. 2>licatus Wh. & N. L. plicate. Term. It. broadly ovate- 
cordate ; bas. subsessile. Pan. subracemose, rather short. 
Stam. and sty. subequal. Fr.-sep. patent. 
Var. Bertramii G. Braun. Luxuriant. Term, It. roundish- 
