CONYZA. 
437 
very straight and upright, erectly branched mostly above the 
middle, somewhat copiously leafy throughout. L. 1-3 in. 
long, 1-3 or 4 lines broad, the upper gradually narrower^ the 
lower and root-1, (the latter forming a rose-like tuft at first) 
dying off as the pi. comes into ff. ; all more or less hirtose and 
ciliate at the edges at least downwards, but sometimes nearly 
smooth. Thyrse 6-9 in. long, 3-4 broad, leafy many-fld. FI. 
pale ochre straw-colour or dirty-w., 1-2 lines long, 1-1£ 
broad. Scales linear-lanceolate with membranous edges nearly 
smooth. Fits, minute, of disk y. perfect 5-cleft tubular, of ray 
pale dirty-w. female minutely ligulate. Ach. truncate at top 
pale brown or straw-colour ; pappus sessile pale yellowish w. 
or straw-colour stiff' fragile and minutely rough or scabrous. — 
Varies much in hairiness, being sometimes nearly smooth. An 
altogether useless but not troublesome weed. 
f4. Conyza L. 
tl. C. AMBIGUA DC. 
Greyish hirtose or hirsute erect stiffly branched subprolifer- 
ously, each branch terminating in a narrow scarcely compound 
leafy not many-fld. racemiform cyme rising above that of the 
main st. or primary main branches ; 1. linear lanceolate attenu- 
ated at both ends, thickly hirsuto-pubescent on both sides and 
subciliato-hirtose, the lower remotely and irregularly deeply in- 
ciso-toothed ; heads moderately large shortly and broadly cylin- 
dric not numerous, crowded and simply racemose upwards, scales 
closely erect hirsuto-pubescent linear-acuminate not overtop- 
ping the disk ; pappus dull w. or rufescent ; ach. pubescent. — 
DC. v. 381 ; Seub. FI. Az. 32; Gr. et Godr. ii. 96; Willk. et 
Lange FI. Hisp. ii. 34. Erigeron linifolium Willd. ex DC. 
E. linifolius RFG. xvi. t. 22. f. ii. E. contortum “Desf.,” Pers. 
ii. 432. no. 40. E. canadense Ten. Prodr. ex DC. ; Brot. i. 
359 (not Linn.). E. ambiguus Schultz Bip. in WB. ii. 208. 
— Herb. ann. Mad. reg. 1, 2, c. In gardens, vineyards and 
by roadsides occasionally everywhere below 2000 ft. at most 
seasons. Not seen in PS. or the Desertas. — In foliage and ff. 
much like the last, but wholly different in its low subproliferous 
habit or inflorescence and much larger calathids. Boot rather 
strong and woody. Whole pi. somewhat hoary-gr., hirtosely or 
hirsutely pubescent, 9-18 in. high. From below the main ter- 
minal raceme-like cyme spring 2 or more branches, each ending 
in a cyme considerably overtopping the 1st, and so on once or 
twice in succession ; the whole of the side cymes ultimately 
rising nearly to a level in a corymbose manner. Cyme with 
short few-lld. side branches below, crowded and racemose or 
simple upwards, the heads 2^-3 lines long, 2-2| broad, on slender 
hirtoso-pubescent pedicels. Scales hairy-pubescent mostly deep 
