APPENDIX I. 
563 
often 5-nate. Lts. yellowisli, very softlj' haiiy beneath. Pan. 
lax. pyramidal. Sep. rising early and clasping poor fr. 
Subsp. Purchasianus Rogers. St. roundish, densely hairj-. 
Prk. crowded, stout-based. L. mostly 5-nate-pedate. Lts. 
narrow, strigose on both sides. Pan. nearly cylindrical. Sep. 
shaggj', erect in fr. 
Subsp. adornatus P. J. Muell. St. blunth- angled, pubescent, 
glaucous. Prk. verj^ strongly declining. L. chiefly 4 — 5-nate. 
Term. It. narrowed very evenly to long point. Pan. verj' 
narrow, wavj- below. Sep. soon erect. 
Subsp. Poicellii Rogers. Slender. L. small. Lts. very 
narrow, with long attenuate point and compoimd incised teeth. 
Stkd. gl. very unequal ; other glandtipped organs usually 
absent. Pan. verj- compound, lax, corj-mbose. Sep. strongly 
reflexed in fl . and f r. 
R. hostilis Muell t Wirtg. St. bluntly angled. L. chiefly 
5-nate, often large. Lts. narrow, with irregular partially com- 
pound teeth and very long point. Pan. mostly short and 
racemose above. Fr.-sep. attenuate, clasping. 
h. Prk. extremely unequal, some verj- long. Stkd. gl. on 
rach. passing into glandtipped acic. 
R.fusco-ater Weihe. Stout and very hairy. L. moderate. 
Lts. typically roimdish-ovate with sharp point, not deeply in- 
cised. Armature very strong. Fr.-sep. erect or patent. 
2. Prk. acic. bristles and intermediate organs of all kinds 
very numerous, very unequal, indiscriminately scattered and 
not tmfrequently glandtipped. 
a. Pet. white. 
R. Koehlen ^Yh. it X. Armature remarkably unequal, 
mostly slender, often glandtipped. Lt. -toothing rather coarse. 
Pan. open, slightly narrowed above. Fr.-sep. reflexed. 
Var. cognatus (X. E. Brown". Intermediate arms often less 
numerous. Leaf-toothing almost lobate-sinuate. Pan. broad 
and much branched. Fr.-sep. at first subpatent. 
b. Pet. pink. 
Subsp. dasyphhyllus Rogers. Latermediate arms present in 
very varying quantity. Lts. thick : teeth compoimd, partly 
recurved. Pan. very narrow, interrupted. Fr.-sep. retiexed. 
R. pliiithostylus Genev. Armature rather sub-Koehlerian. 
Lts. long, narrowed at both ends, very pale beneath. Pan. 
large. Fr. small. Fr.-sep. loosely reflexed or subpatent. 
R. Marshalli Focke & Rogers. Hairy. Armature ex- 
ceedingly dense and tmequal, almost wholly patent. L. small. 
Pan. very elongate, with verj- long lower- branches. Sep. 
subpatent in young fr. 
