298 COMPOSITE. . Hofmeisteria. 



* * * Pappus of copious capillary and merely scabrous or at most minutely barhellate bristles. 

 Receptacle naked, or in No. 115 and 116 with some delicate bristles between the flowers. 



+- Akenes not flattened : pappus white, mostly bright white, 



++ All or most of it early deciduous or caducous more or less in a ring. 



114. Glyptopleura. Akenes 4-5-angled and with a sculptured surface, abruptly short-beaked 



from a cup-shaped shoulder, and the beak cup-shaped at apex or hollow. Receptacle 

 naked. 



115. Calycoseris. Akenes tapering into a slender beak, the apex of which is dilated into a 



searious crown or shallow cup. Receptacle with delicate bristles between the flowers. 



116. Malacotlirix. Akenes columnar, truncate at both ends, 10-15-ribbed ; the broad apex 



with a prominent crown-like margin or sharp edge, either entire or denticulate, some- 

 times bearing a more persistent outer pappus of 1 to 8 stronger bristles. 



++ ++ Pappus more persistent, simple, the bristles separately if at all deciduous from the akene : 



flowers mostly yellow. 



117. Crepis. Scales of the involucre commonly carinate-thickened at base or with firmer 



midrib when old. Akenes 10-20-ribbed, smooth, more or less tapering at the apex, 

 not long-beaked. 



118. Troximon. Scales of the involucre unaltered in age. Akenes 10-ribbed, not muricate- 



roughened, above contracted into a neck or beak. 



119. Taraxacum. Scales of the involucre unaltered in age. Akenes 4 -10-ribbed or angled, 



the ribs becoming muricate, the apex developed into a long filiform beak. 



-i- +- Akenes not flattened nor beaked : pappus tawny or dirty white, mostly fragile. 



120. Apargidium. Head many-flowered on a simple scape. Flowers yellow. Akenes short, 



not ribbed : bristles of the pappus barbellate-denticulate. 



121. Hieracium. Heads many-flowered. Flowers yellow. Akenes short, 5 - 10-ribbed : bris- 



tles of the pappus scabrous. 



122. Lygodesmia. Heads 5-10-flowered. Flowers rose-color or pink. Akenes narrow or 



slender : bristles of the pappus copious, scabrous. 



+- -•- +- Akenes flat : pappus almost always bright white, fine and soft. 



123. Lactuca. Involucre not tumid at base. Akenes with a beak or neck under the dilated 



disk that bears the pappus, the bristles of which fall separately. 



124. Sonchus. Involucre becoming tumid or fleshy-enlarged at base. Akenes destitute of 



beak or neck, and having no dilated pappus-bearing disk : bristles of the pappus decidu- 

 ous more or less in connection. 

 Ceyptostemma calendulacea, R. Br., of the tribe Arclotidcce, a native of S. Africa, but 

 naturalized in Australia, has been gathered by Mr. E. L. Greene near the landing at South Val- 

 lejo ; probably a ballast weed, and we may hope transient. It is a stemless plant, with leaves 

 resembling those of Dandelion, but white-tomentose, at least beneath, the solitary heads on slen- 

 der scapes, and the ray-akenes enveloped in very long wool. It is not worth while to introduce 

 another tribe into the series for this waif. 



(Tribe I. VEENONIACEiE, wanting.) 



Tribe II. EEPATOBIACEyE. 



Heads all homogamous and discoid ; the flowers perfect, with regular tubular 

 corollas, never truly yellow. Anthers obtuse at base. Branches of the style obtuse, 

 inclined to club-shaped, minutely papillose-roughened or almost smooth, destitute 

 of any appendage ; the stigmatic lines indistinct. 



1. HOFMEISTERIA, Walpers. 



Head many -flowered. Involucre of imbricated narrow acuminate scales, the 

 exterior successively shorter. Beceptacle flat, naked. Corollas slender, 5-toothed. 

 Branches of the style club-shaped. Akenes 4-5-angled. Pappus of 2 to 12 slen- 

 der bristles alternating with as many chaffy scales. — Low plants, suffruticose at 

 base and branching, nearly glabrous, with long-petioled incised or lobed leaves, the 



