298 COMPOSIT^iS. Hofmeisteria. 



• ♦ ♦ Pappua of coi>iou3 i;aitiUury iiinl iiieiely scabrous or at most iniiuitely Urljellate luistles. 

 Ueceptui'lo iiakou, or in No. 115 uiid 110 willi soiiio delicate bristles between the lloweis. 



•»- Akoiius not llutteuod : ])appu8 wliito, mostly bright white, 

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

 11-1. Olyptopleura. Akiinus 4-r)-anglod and with a soulptured surface, ivbru|>tly short-beaked 

 lioin a cup-shaped sliouldcr, and the beak cup-shaped at apex or hollow. Receptacle 

 naked. 



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



bcurioiis ciown or shallow cup. Keceptaclo with delicate bristles between the flowers. 



116. Malacothrix. Akenes colunmar, 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 ol' 1 to 8 stronger bristles. 



++ ++ Pappus more pereistent, simi)lc, the bristles separately if at all deciduous from the akene : 

 llowers mostly yellow. 



117. Crepis. Scales of the involucre commonly carinate-tliickened 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. 



+- +■ Akenes not llattened nor beaked : papjjus tawny or dirty white, mostly fnigile. 



120. Apargidiuiu. Head many-tlowered on a simple scape. Flowers yellow. Akenes short, 



not riblted : bristles of the jiaj)pus barlKjUate-denticulato. 



121. Hieracium. Heads many-llowered. I'lowers yellow. Akenes short, 5 -10-ribbed: bris- 



tles of the pappus scabrous. 



122. Lygodesmia. Heads 5 - lO-fiowered. Flowers rose-color or pink. Akenes narrow or 



slender : biistles of the pappus copious, scabrous. 



-1- -H -t- Akenes Hat : pappus almost always bright white, fine and soft. 



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



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



124. Sonchus. Involucre beconung 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. 

 Crtpto.stemma CALENDUi.ACEA, R. Br., of the tribe Jrdotidecc, 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 steuiless plant, with leaves 

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

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

 another tribe into the series for this waif. 



(Tin BE I. VERNON I ACEiE, wanting.) 



Tribe II. EUPATOPJACEiE. 



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

 corollas, never truly yellow. Anthers obtuse at base. Branches of the stylo obtust;, 

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

 of any appendage ; the stigraatic lines indistinct. 



1. HOFMEISTERIA, Walpers. 

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

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

 Branches of the style club-shaped. Akenes 4 - 5-angled. Pappus of 2 to 1 2 blen- 

 der bristles alternating with as many chafl"y scales. — Low plants, suff'ruticose at 

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



