316 Transactions. — Botany. 



are creeping plants with round leaves. The puberulous lines 

 on their lower stems are excessively minute, and can only be 

 detected with a strong lens. The curved close hairs on the 

 peduncle are a curious and pleasing object. More specimens 

 are a desideratum. 



Order XXXIX. Composite. 

 Genus 17. Senecio, Linn. 

 1. S. dhnorpliocarpos , sp. nov. 



Plant perennial, herbaceous, glabrous (^primd facie), but 

 with a few slightly- scattered weak woolly hairs. Main stems 

 stout, erect, 2ft.-3ft. high, 3-4 lines diameter, striate, purple. 

 Leaves basal (root-stock), subrosulate, spreading, obovate- 

 spathulate, 5|-in. long (including petiole), l^in. broad, deejDly 

 pinnatifid, lobes cut bluntly laciniate and crisped adnate 

 (sursiim currcns), the lowermost very small, almost pinnate ; 

 petiole l|-in.-2in. long, narrowed, deeply sulcate, succulent ; 

 cauline, on main stems, numerous, alternate 6-12 lines dis- 

 tant, thin, obovate, much tapering, tip broad, 12iu. long, 

 3in.-4in. wide near top, sub-lyrate-pinuate ; segments large 

 and close above on rhachis, small and very distant below, 

 irregularly and deeply laciniate-lobed (subpinnatifid), lobes 

 distantly and bluntly toothed, decreasing rapidly in size down- 

 wards and very small near base, dark-green above paler be- 

 neath, slightly hairy ; hairs short, weak, and scattered, woolly 

 on veins ; veins few filiform and prominent ; the young imma- 

 ture leaves densely woolly ; scurfy on undersurface ; midrib 

 (or rhachis) narrow; petiole (or lowest rhachis) liu.-2in. long, 

 slender, slightly expanding and subamplexicaul at base ; leaves 

 on branches, distant, oblong, elliptic, much more narrowly 

 cut, laciniate, flaccid, spreading, 3in.-5in. long, 2in.-2|-in. 

 broad, decreasing in size upwards and extending to bases of 

 panicle branches. Flower-heads rather large, 10-11 lines 

 diameter, numerous in a loose terminal irregular many- 

 branched subcorymbose panicle 4in. wide ; branchlets long, 

 dichotomous, and very slender ; peduncles about lin. long, 

 slender, striate, single and two together, finely and slightly 

 downy, each having 4-6 scattered long linear bracteoles. 

 Involucre cup-shaped or suburceolate, glossy within, the 

 bracts 13 cut to base, li lines long and h line wide, imbri- 

 cate, suboblong-ovate, acuminate, green with wide membran- 

 ous white margins, prominently 2-nerved ; nerves dark-green ; 

 tips acute, dark-brown-purple, very hairy and ciliolate with a 

 few (5-8) scattered linear (almost filiform) bracteoles at base, 

 their tips very acute and coloured like those of involucre. 

 i?a7/-florets generally 13, ligula (without the tube) 3i lines 

 long, linear-lanceolate obtuse with a single notch at tip. 



