364 COMPOSITH. [Hrechtites. 
* Involucral bracts 8-10. 
Glabrous or nearly so. Leaves membranous, usually re- 
gularly denticulate HF f. on .. 1. E.prenanthoides. 
** Tnvolucral bracts 10-14. 
Cottony or woolly. Leaves linear-oblong, lobed or pin- 
natifid oe ae ais .. 2. H. arguta. 
Scabrid with short white hairs. Leaves linear-oblong, 
lobed or pinnatifid . es 3. E. scaberula. 
White with cottony tomentum. Leaves linear- ‘elongate, 
entire or minutely remotely toothed; margins revolute 4. H. quadriden- 
tata. 
Glabrous or nearly so. Leaves erect, lower oblong or 
linear-oblong, upper linear, entire or denticulate .. 5. H. diversifolia. 
Glabrous or nearly so. Leaves spreading, membranous, 
pinnatifid or pinnate with a large terminal segment .. 6. H. glabrescens. 
1. HE. prenanthoides, D.C. Prodr. vi. 296.—A tall erect 
annual or biennial herb 1-4ft. high, simple or branched above, 
glabrous or slightly hairy. Leaves rather distant, 2-6in. long 
or more, linear-oblong to lanceolate or linear-lanceolate, acuminate, 
lower petiolate, upper sessile with broad toothed auricles, mem- 
branous, regularly or irregularly closely and finely denticulate, 
rarely lobed. Corymbs very large, terminal, 6-12in. across or 
more; pedicels slender, +4in. long. Heads quite glabrous, din. 
long; involucral bracts 8-10, narrow- linear, green with white 
margins. Florets 18-22; females more numerous than the her- 
maphrodite. Achenes linear-oblong, grooved, hairy, surmounted 
by a callous ring surrounding the base of the pappus. — Hook. 
f. Fl. Nov. Zel. i. 141; Handb. N.Z. Fl. 156; Benth. Fi. 
Austral. iii. 658; Kirk, Students’ Fl. 333. Senecio prenanthoides, 
A. Rich. Sert. Astrol. 96. S. heterophyllus, Col. in Trans. N.Z. 
Inst. xxvii. (1895) 389. 
NortrH anp SourH Isnanps, Stewart IstAND, CHAaTHAM ISLAND: From 
Ahipara and Mongonui southwards, but rare and local to the north of the 
Thames Valley. Sea-level to 3000 ft. October—January. Also in Aus- 
tralia and Tasmania. 
2. B. arguta, D.C. Prodr. vi. 296.—A coarse erect annual 
herb 1-3 ft. high; stem stout, grooved, branched above, more or 
less cottony or woolly, rarely almost glabrous. Leaves 2-4 in. 
long, linear-oblong or lanceolate, acute or obtuse, lower usually 
contracted into a petiole, upper sessile with a broad toothed stem- 
clasping base, coriaceous, coarsely and irregularly toothed or lobed 
or pinnatifid, lobes sinuate-dentate, upper surface glabrous or cob- 
webby, beneath more or less clothed with loose white cottony 
tomentum. Corymbs terminal, dense; pedicels slender, cottony. 
Heads +in. long; involucral bracts 12- 14, usually with a few 
minute ones at the base, narrow linéar-lanecolate: woolly below. 
Florets 30-40; females much the most numerous. Achenes linear- 
