196 29. R. RADULA. 



ascending branches. Sepals ovate-acuminate, aciculate, setose, 

 hairy, felted, with a slender point. Petals distinct, oulong, 

 narrowed below, notched at the blunt round end, pink. 

 Filaments pale pink. Anthers greenish yellow. Styles pink. 

 Primordial fruit-stalk short, shorter than the loosely re- 

 flexed sepals. J^ut ovate ; inner edge nearly straight. 



The P. Leightonii seems certainly to be a form of this 

 species from which its differences are slight and are chiefly 

 as follows : — Aciculi, setae and hairs on the stem much 

 fewer, scattered, shorter. Leaflets flat, pilose above ; inter- 

 mediate cuspidate ; terminal obovate, cuspidate, slightly 

 cordate below. Primordial fruit-stalk shorter than the sepals. 

 It is not constant to these characters. I have never seen 

 any specimens of nearly so marked a kind as those from the 

 two original bushes sent to Lindley and considered as a 

 hybrid by him, unless " really a plant of common occurrence." 

 In my opinion those issued in Leigh ton's Fasc. of Ruhi are 

 far from being typical. It is perhaps hardly worthy of 

 separation from P. Padula even as a variety. The P. 

 Padula V. sylvaticus (Wirtg.), of which a specimen will be 

 found in the Herh. Pub. (No. 89), agrees very well with P. 

 Leightonii. My P. Lingua fS tomentosus appears to be P. 

 Leightonii. The other variety of my P. Lingua will be 

 found noticed under P. Hystrix. Mr Bloxam considers the 

 P. Leightonii to be the same as P. melanoxylon (Miill.), and 

 a distinct species. 



The variety called denticulatus also varies very slightly 

 from the type of this species. It chiefly differs by the 

 extreme fineness of the felt on its leaflets, which seems 

 indeed to be sometimes altogether wanting ; their very fine 

 dentition, which is nevertheless certainly double; and the 

 very square form of the terminal leaflet. Its prickles are 

 usually yellow, but in one of its states they are of a beauti- 

 ful blood-red colour. Mr Bloxam's plant, which is noticed in 





