[Vol. 2 



612 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



radiate ; involucre campanulate, glabrous, minutely calyculate ; 

 bracts of the involucre 21, linear-lanceolate, 3 to 4 mm. long; 

 ray-flowers about 13 ; disk-flowers numerous, 70 to 90 ; aehenes 

 hirtellous along the ribs. 



Distribution: eastern Mexico. 



Specimens examined: 



Tamaulipas: Tampico, coll. of 1827, Berlandier 186 (Ber- 

 lin Herb., tracing and fragments in Gray Herb.), co-type. 



Vera Cruz: Wartemberg, near Tantoyuca, coll. of 1858, 

 Ervendberg 90 (Gray Herb.) ; without locality, Liebmann 

 172 (Copenhagen Herb., tracing and fragments in Gray 



Herb. ) . 



Puebla: near Metaltoyuca, alt. 240 m., 27 Feb., 1898, Gold- 

 man 74 (U. S. Nat. Herb, and Gray Herb.). 



San Luis Potosi : without definite locality, Parry & Palmer 

 533 (Gray Herb.). 



23. S. hypotrichus Greenm. 1 



S. Sanguisorbae Hemsl. Biol. Cent.-Am. Bot. 2 : 246. 1881, 

 in part, not DC. 



An herbaceous perennial; stem 7 dm. high, erect, striate, 

 glabrous, somewhat purplish, branched above; leaves pin- 

 nately divided into cuneate to rhomboic-ovate dentate unequal 

 divisions, glabrous above, crisp-hirsute beneath; lower leaves 

 including the petiole 2 to 3 dm. long, 4 to 9 cm. broad, the 

 upper stem-leaves sessile, semiamplexicaul and gradually 

 reduced towards the terminal corymbose cyme ; heads 8 to 10 

 mm. high, radiate; involucre campanulate, sparingly calyc- 

 ulate; bracts of the involucre usually 21, linear-lanceolate, 



^enecio hypotrichus Greenm. sp. nov. herbaceus perennis; caule erecto cir- 

 citer 7 dm. alto tereti striato stramineo vel plus minusve purpurascenti glabra, 

 superne ramoso; foliis pinnatifidis, inferioribus petiolatis usque ad 3 dm. longis, 

 4 to 9 cm. latis, superioribus sessilibus et semiamplexicaulibus gradatim reductis, 

 laeiniis anguste cuneatia vel obovatis vel rhombo-ovatis suberenato-dentatis supra 

 glabris subtus crispo-hirsutis; inflorescentiis terminalibus eorymboso-cymosis; 



capitulis 8-10 mm. altia radiatis; involucri squamis pleruni(|ue 21 lineari-lanoeo- 



latis 5-0 mm. longis glabris; flosculis liguliferis saepius 13, ligulis oblongis, 

 -7 mm. longis, 2.5 mm. latis, 4-5-norviis; floribus disci 00-70; achaeniis glabris. 

 ■Region of San Luis Potosi, Mexico, alt. 1830-2440 m., coll. of 1878, Parry d 

 Palmer 533 (U. S. Nat. Herb.), typk. The Gray Herbarium specimen of Parry 

 and Palmer's No. 533 differs from the United States National Herbarium speci- 

 men above cited in having glabrous have-, smaller and more numerously flowered 

 heads and hirtellous aehenes; it has been referred to »S". tampicanus D< '. 



