Centipeda.] XXXIX. COMPOSITAE. 329 



broadly ohovate, with purple margins, pubescent ; receptacle convex ; florets 



numerous, trumpet-shaped. Female : Jin. in diameter; involucral bracts in 3—4 



series, mostly incurved, with purple margins, the outer suborbicularj the inner 



linear-obtuse ; receptacle narrow, conical ; corolla short, ovate, inflated, greatly 



contracted at the mouth, minutely 4-toothed. Achene curved, almost clavate, 



convex at the back. — Leptinella squalida, Hook, f., Fl. N.Z. i. 129. 



NORTH Island: East Gape and Hawke's Bay, Golenso. Hikurangi, J. B. Lee I SOUTH 

 Island : Nelson : Wairau Valley, Cheeseman I Clarence and Waiau-ua Valleys ; Spencer Mountains ; 

 T. K. Canterbury : Akaroa, Raoul ! Upper Canterbury Plain, Travers I Upper Waimakariri, 

 Berggren ! Enys I Westland : Jackson's Bay, T. K. Otago : Lake District, St. Bathan's, Te Anau, 

 &o., Petrie I Martin's Bay, T. K. Sealevel to 2,500{t. Jan., Feb. 



Easily distinguished by the soft pale incised leaves and the incurved bracts of the pistillate 

 heads, completely hiding the florets. 



18. CENTIPEDA, Lour. 



Involucre hemispherical; bracts in about 2 rows, membranous, with scarious 



margins. Receptacle naked, depressed. Female florets very numerous, in many 



series ; corolla minute, tubular ; style-arms short. Male florets few, central ; 



corolla short, broadly campanulate ; style-arms very short. Achenes thick, 



tetragonous or nearly so. Pappus 0. Small annual or perennial herbs, with 



erect or prostrate stems, alternate leaves, and axillary or rarely terminal heads. 



A genus comprising about i species, 1 of which is found in Australia, China, India, extra- 

 tropical South America, and New Zealand. The others are Australian. 



1. C. orbicularis, Lour., Fl. Cochinch. ii. 493. A strong-smelling much 



branched prostrate or rarely suberect annual. Stems 3in.— 6in. long. Leaves 



Jin.— fin. long, oblong or oblong-lanceolate, cuneate below, sparingly irregularly 



toothed or almost lobed, glabrous or glabrate, rarely hairy. Heads axillary, 



^in.— Jin. in diameter, numerous, sessile or rarely on very short peduncles ; 



involucral bracts in 3 rows, broadly oblong or cuneate-oblong, membranous. 



Receptacle hemispherical, much depressed. Female florets in several rows, 



excessively numerous ; corolla minute, 4-lobed ; style lobes short, obtuse. 



Disk-florets few ; style-arms short, truncate. Achenes obtusely tetragonous, 



streaked, hairy. — F. MuelL, Key to Vict. PI. 312. Myriogyne minuta, Less, in 



Linnaea vi. (1831) 219 ; Hook, f., Handbk. 144. 



NORT-H and SOUTH Islands : from Awanui and Mangonui to the Lake district and central 

 Otago. Sealevel to 2,000ft. Dec. to Feb. 



* SOLIVA, Ruiz and Pav. 



Involucral bracts in about 2 rows ; margins scarious. Receptacle flat, naked. 

 Outer florets female, in several rows ; corolla 0. Disk-florets tubvilar, narrowed at 

 the base, hermaphrodite but usually sterile; style-arms short, truncate, or stigmas 

 entire. Achenes flattened, bordered by a thick or rigid wing, which invests the base 

 of the persistent style, or is produced into divergent points. Pappus 0. Small 

 diffuse herbs, with alternate finely-dissected leaves and sessile flower-heads. 

 Heads crowded. Achenes with a broad thick wing, truncate above . . .. * S. anthemifoUa. 



Heads rather distant. Achenes with a broad rigid wing, ovate . . .. * S. sessilis. 



83 



