370 COMPOSITA. [ Senecio. 
Much-branched shrub 1-2ft. Leaves 1 x j4in., narrow- 
linear; margins revolute to the midrib. Head 1in. 
diam., solitary ona leafy peduncle .. #8 af 
Closely branched shrub 4-10 ft. Leaves 44in., linear- 
oblong. Head solitary, sessile, tin. diam. .. .. 26. S. cassimoides. 
25. S. bifistulosus. 
*** Fleads discoid ; ray wanting. 
Branching shrub 4-10ft. Leaves 2-6in., obovate or 
oblong-lanceolate, tomentose beneath. Panicle large. 
Heads 4in. diam. ae ni a0 3 
Shrub or small tree 6-30ft. Leaves 2—5in., orbicular or 
nearly so. Panicleslarge. Heads fin. diam. .. 28. S. rotundifolius. 
Small compact shrub 1-3 ft. Leaves 4-2in., oblong, very 
era riane Corymbs usually dense. Heads }-4in. 
iam. sa be ae 3h 46 nf 
Slender glabrous shrub 1-4 ft. ; young branchlets glutinous. 
Leaves 14-3 in., obovate-spathulate, veined. Corymbs 
lax. Heads4-din. diam. .. 36 4c .. 30. S. geminatus. 
27. S. eleagnifolius. 
29. S. Bidwillit. 
S. Pottsvi, Armstr. in Trans. N.Z. Inst. iv. (1872) 290, is quite unknown to 
me, and there are no specimens in any colonial herbaria. It is described as 
a small slender suffruticose species with decumbent flexuose branches 3-6 in. 
long, the branches, petioles, and leaves beneath clothed with loose white cottony 
tomentum. Leaves petiolate, 4-lin. long, ovate or spathulate, glabrous above, 
crenate. Heads solitary, 4in. long, on slender bracteate peduncles; inyolucral 
bracts 15-20, linear, obtuse, cottony.—Mount Jollie, Rangitata district, alt. 
4500 ft. 
S. dimorphocarpos, Col. in Trans. N.Z. Inst. xxvi. (1894) 316, is S. jacobea, 
Linn., the common ragwort of the Northern Hemisphere, which has become 
naturalised in many districts in both the North and South Islands. It is a tall 
almost glabrous perennial 2-4 ft. high, with irregularly pinnatifid or 2-pinnatifid 
leaves 2-6in. long, a dense corymb of rather large heads 2-1 in. diam., bright- 
yellow rays, and glabrous ribbed achenes. 
S. areolatus, Col. l.c. 317, is S. sylvaticus, Linn., another common northern 
plant which has become established in New Zealand. An annual slightly 
glandular-pubescent herb 1-3 ft. high, with irregularly pinnatifid leaves 1-3 in. 
long, loose corymbs of small heads 4in. diam., with very short revolute rays 
and silky ribbed achenes. 
Several other species of Senecio have become naturalised, the most widely 
distributed being S. vulgaris, Linn., the common groundsel, which can be 
recognised by its small size, 6-12in. high, succulent grooved stems often 
branched from the base, irregularly pinnatifid or toothed leaves, small cylindric 
heads with the florets all tubular and hermaphrodite, and an involucre of about 
20 equal bracts. 
1. S. lagopus, Raoul in Ann. Sci. Nat. Ser. ii. 2 (1844) 119, 
t. 18.—Rootstock stout, densely clothed at the top with long 
brownish silky wool. Leaves all radical, crowded, spreading ; blade 
1-5 in. long, broadly oblong, rounded at the tip, usually cordate at 
the base, margins entire or crenulate, upper surface rugose, covered 
with short stiff bristles, beneath densely clothed with white tomen- 
tum; petioles 4-4in. long, stout or slender, densely villous. Pe- 
duncles or scapes 1-12 in. high, simple or much branched, pubescent 
and glandular-pilose ; bracts few, small, obtuse. Heads 1 to many, 
