558 APPENDIX. 



Pan. very lax and glandular, slightly armed, much narrowed 

 above. Somewhat intermediate between R. Drejeri and 

 JR. Ley anus. 



(R. podophyllus P. J. Muell.) See Group IX., Radulce. 



Group IX. RADULA:. St. rough with crowded short sub- 

 equal acic. and stkd. gl. Large prk. subequal (usually equal 

 in typical R. radula) and nearly confined to angles. Inter- 

 mediate prk. absent. While thus strictly limited the members 

 of this group can hardly be confused with those of any other. 

 As in the three succeeding groups, all the pan.-branches except 

 the lowest are usually cymose or umbellate-racemose and not 

 simply racemose. Stkd. gl. and acic. on pan. unequal, mostly 

 short. 



1. Stkd. gl. on pan.-rach. and peel, mostly sunken in the 

 patent hairs ; well-marked acic. usually few or none. Stkd. gl. 

 and acicular organs on st. crowded. 



a. L. with ashy or greenish-grey felt beneath. 



R. radula Weihe. Prk. rather few, very strong, all on the 

 angles, about equal. Faces of st. with very short subequal 

 mixed armature. Term. It. broadly ovate-acuminate. Pan. 

 pyramidal, with strong prk. 



Subsp. anylicanus Rogers. Prk. weaker, many, more 

 scattered, only subequal. General armature showing rather 

 more range of variation. Term. It. narrow, obovate or oval, 

 finely toothed. Pan. cylindrical, with weak prk. 



Subsp. echinatoides Rogers. St. glabrous. Prk. rather more 

 variable, occasionally hooked. Lts.all obovate, with compound 

 incised teeth, often greener and only hairy beneath. Pan. 

 much like that of R. radula. 



Subsp. sertiflorus Muell. & Lefv. ? Prk. chiefly short, often 

 hooked. Lts. uniformly narrow, somewhat cuneate, with 

 shallow teeth, scon greenish beneath. Pan. rather narrow, 

 with hooked prk. and small fl. 



R. echmatus Lindl. Prk. strong, nearly equal. Lts. thick, 

 incised-lobate, all greyish- felted beneath. Pan. very narrow, 

 with large fi. strongly refiexecl sep. and declining prk. 



R. rudis Wh. & N. St. glabrous. Prk. many, short. 

 Glands very abundant, sessile and shortly stalked. L. large. 

 Pan. diffuse, with many slender-pedicelled small fl. 



b. L. normally green and rather thinly hairy beneath (in 

 vars. Neivbouldii and Bioxamianus sometimes thinly felted). 



R. oigocladus Muell. & Lefv. ? St. bluntly angled, dark, 

 glaucous, thinly hairy. Term. It. obovate-cuspidate, much 

 narrowed towards base. 



