620 LXXI. COMPOSITA. | Lactuca 
yellow ; young achenes all alike, much compressed, elliptic-oblong, 
somewhat narrowed at the base, narrowed at the apex into a 
short beak, glabrous, with a central and sublateral rib on each 
side, + in. long; pappus copious, } in. long, setose, whitish, unequal ; 
the sete: minutely scabrid, the outermost ones very short; re- 
ceptacle without conspicuous scales. 
Houitia.—In hilly rocky places near Mumpulla, towards Nene ; fi. 
Oct. 1859. No. 3655. At Lopollo; fl. and young fr. Jan. 1860. 
No. 3654. 
This is nearly related to the next species. 
3. L. imbricata Hiern, sp. n. 
A robust very nearly glabrous glaucescent herb, strictly erect, 
4 to 6 ft. high ; stem and branches sulcate-striate, fistular ; stem- 
leaves alternate, pinnati-partite, rigidly membranous, acute, 6 to 
8 in. long, the terminal lobe narrowly linear-lanceolate 4 to 5 in. 
long, the uppermost pair of the lateral lobes erect-patent similar, 
11 to 23 in. long, all or most of the other lateral lobes much 
shorter patent obtuse acute or acutely dentiform ; capitula cam- 
panulate, many-flowered, nearly an inch long, on pedicels ranging 
up to 1+ in. long, arranged in rather lax, dichotomous, corymbose 
or obovoid cymes ; involucral scales imbricate, pluriseriate, obtuse, 
not thickened at the base, the outermost ones short and very broad, 
the inner ones successively longer and more oblong, the innermost 
ones sublinear, 3 in. long, all covered at least on the exposed part 
of the back with groups of minute very glandular specks arranged 
in intricate closely-figured series, coriaceous with the margins 
thinner and coloured or scarious; flowers yellow; the corollas 
rather exceeding the involucre; achenes all alike, compressed, 
dark reddish, ovate-oblong, + to ;5, in. long or at length shorter 
and blunter, obtusely narrowed at the base, attenuate at the apex 
into the short beak, glabrous, surrounded with a thickened border 
and with a rib along the centre of each side; pappus 3 to 2 in. 
long, whitish but rather drab, copious, deciduous together, setose, 
the sete (except microscopically) smooth ; receptacle naked or 
without conspicuous scales. 
Hviiia.—In thickets at the outskirts of the Monino forests ; fl. and 
fr. Dec. 1859. No. 3656. 
The imbricate involucre in this plant suggests Troximon or Reichardia 
rather than Lactuca ; the ribs on the fruit place it near to L. Schwein- 
furthii O. & H. 
4, L, Macroseris Hiern, sp. n. 
An erect subglabrous subglaucescent robust herb, 7 to 9 ft. high, 
with the habit of a Sonchus, milky in all parts, perennial ; root 
thick, succulent, oblique; stem solitary, terete, striate, straight, 
simple, widely fistular, purple throughout, almost an inch in 
diameter at the base, more or less leafy throughout ; leaves 
alternate, pinnatifid, the lower ones deeply so, the upper ones 
searcely lobed, denticulate, apiculate, thinly herbaceous, rather 
paler and aculeate-hispidulous along the midrib beneath, abruptly 
narrowed into a quasi-petiolate auriculate-clasping base or the 
