620 Lxxi. COMPOSITE. [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, i in. long ; pappus copious, i in. long, setose, whitish, unequal ; 

 the setse minutely scabrid, the outermost ones very short ; re- 

 ceptacle without conspicuous scales. 



HriLLA. — In hilly rocky places near Mumpulla, towards Nene ; fl. 

 Oct. 1859. No. 3655. At LopoUo ; 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, 

 li to 2^ in. long, all or most of the other lateral lobes much 

 shorter patent obtuse acute or acutely dentiform ; capitula cam- 

 panvilate, many-flowered, nearly an inch long, on pedicels ranging 

 up to li in. long, arranged in rather lax, dichotomous, corymbose 

 or obovoid cymes ; involucral scales imbricate, pluriseriate, obtvise, 

 not thickened at the base, the outermost ones short and very broad, 

 the inner ones successively longer and more oblong, the innermost 

 ones sublinear, f 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 -^-^ 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 f to f in. 

 long, whitish but rather drab, copious, deciduous together, setose, 

 the setse (except microscopically) smooth ; receptacle naked or 

 without conspicuous scales. 



HuiLLA. — 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 

 scarcely 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 



