562 APPENDIX. 



slender. Lts. shining, with close fine teeth. Pan. cylindrical, 

 racemose-corymbose, with very unequal stkd. gl. 



R. longithyrsiger Bab. Prk. short. Lts. with shallow even 

 teeth, obovate-cuspidate. Pan. pyramidal, racemose or sub- 

 racemose above ; ped. rigid, purplish with short stkd. gl. Carp, 

 pubescent-glabrescent. 



botryeros var. nov. St. conspicuously glaucous. Prk. and 

 other arms more unequal. L. rather more frequently 4-5-nate. 

 Lts. truncate-mucronate, more narrowed towards base. Pan. 

 more composite, with larger fl. less rigid ped. and hairy carp. 

 b. Fr.-sep. normally reflexed throughout. 



JR. foliosus Wh. & N. Prk. many weak subequal. Lts. 

 nearly uniform, usually broadest near middle. Pan. long and 

 narrow, with flexuous rach. and short few-flowered and often 

 fasciculate branches. 



Group XII. KOEHLERIANI (Hystrices Focke). St. lo\v 

 arching or nearly prostrate or climbing, usually indistinctly 

 angled, with scattered prk. prklets acic. bristles and stkd. gl. of 

 varying form and length. Some prk. very strong and (like all 

 the arms) occasionally glandtipped. L. mostly 5-nate. Pan. 

 composite, sometimes subracemose above ; lowest brandies 

 racemose ; middle and often upper cymose or subumbellate, 

 3 to many-flowered ; rach. and ped. almost as variously armed 

 as st. Usually large strong plants, with more unequal and 

 varied armature than is found in any other group. Distinguished 

 from the Sub-Koehleriani by the greater range of variation in 

 the still, more scattered armature, the special abundance of 

 strong bristles passing into acic. and the greater number and 

 greater length of the glandtipped organs. 



1. Prk. somewhat scattered, but chiefly on angles. Prk. and 

 acic. rarely glandtipped. Intermediate arms only fairly 

 many. 



a. Prk. not very unequal, all of moderate length (except 

 occasionally in R. hostilis). Stkd. gl. on rach. rarely very 

 long. 



R. rosaceus Wh. & N. St. roundish, pubescent or sub- 

 glabrous. Prk. rather short. L. chiefly 3-nate. Lts. broad, 

 hairy on nerves beneath ; lat. very gibbous. Pan. broad. Pet. 

 bright pink. 



Var. hystrix (Wh. & N.). St. angular, more hairy, with 

 stronger more unequal armature. L. often 5-nate. Lts. 

 narrow, pubescent beneath. Pan. narrow. Sep. more erect. 

 Pet. pink or pinkish. 



Var. infecundus Rogers. Armature nearly Radulan. L. 



