32 Contributions from the Gray Herbarium 
— This species, having the outer flowers ligulate, must be trans- 
ferred to Erigeron. Conyza notobellidiastrum var. oblongifolia 
Griseb., l. c. 178, I have not been able to examine, but from descrip- 
tion it does not seem a form of much significance. 
ErIGERON optusus (HBK.) Gomez, Anal. Hist. Nat. Madrid 
xix. 272 (1890), as obtusum. — Conyza obtusa HBK. Nov. Gen. iv. 
71 (1820). — A true Erigeron of the conyzoid group, related to E. 
varitfolius (see beyond). . 
ERIGERON ScurepEANus Less. ! Linn. v. 145 (1830), as Schiede- 
anum. — Conyza subdecurrens DC. Prod. v. 379 (1836). Erigeron 
subdecurrens (DC.) Gray in Torr., Bot. Mex. Bound. 78 (1859), a8 
to syn. only; Sch. Bip. ex Gray, Syn. FI. i. pt. 2, 220 (1884). Lepti- 
lon integrifolium Woot. & Standl. Contr. U. S. Nat. Herb. xvi. 183,73 
(1913). — Fragments and a tracing of the type of 2. Schiedeanus ei 
(Schiede 314, Llanos de la Perote, Sept. 1828), brought by Dr. 
Greenman some years ago from the Berlin Herbarium, prove it to, 
be identical with the plant which has been called /. subdecurrens. 
EriGERon variifolius, nom. nov. — Conyza coronopifolia HBK. 
Nov. Gen. iv. 70 (1820), not E. coronopifolius Schrank, Denkschr. 
Bot. Ges. Regensh. ii. 69 (1822). ?C. hispida HBK. |. c. 71, nob 
E. hispidus Baker in Mart. Fl. Bras. vi. pt. 3, 29 (1882).— This 
common Mexican species, having ligulate outer female florets, 
must be referred to Erigeron, which has already been done by 
Schultz Bipontinus in herb., but under an untenable name. Forms 
with spatulate or spatulate-oblanceolate entire or subentire leaves; 
such as Ehrenberg 873, from near Hacienda del Carmen (hb. Berol.); 
have been distinguished by Schultz as a variety under an unpub- a 
lished name, but the differences are at most only formal. . 
Conyza mima, sp. nov. Annua erecta simplex vel sparse Ta 
mosa 8.5~21 cm. alta. Caulis tenuis purpurascens lanato-tomen- : 
tosus pilis laxis albidis. Folia anguste oblonga vel sublinearia ad 
apicem pectinate 3-5-denticulata dentibus calloso-mucronulats — 
basi sessilia pautlum decurrentia paullum revoluta utrinque viridia 
lanata pilis subdeciduis basi glandulosis 18 mm. longa 3 mm. lata : 
vel minora. Capitula numerosa in racemis brevibus densis axillary 
bus et terminalibus paene e basi plantae orientibus 2.7 cm. longis 
vel brevioribus paniculam densam virgatam efficientibus, singwia — 
shi 4mm. alta 5mm. crassa, Involucri 4mm. a 
3-seriati paullum gradati phyllaria lineari-lanceolata attenuat® — 

Fig Shas 
* = 



