346 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. II 



B. L. ROBINSON has very kindly compared for me the CONZATTI 

 plant with a part of the original LIEBMANN material now at the 

 Gray Herbarium and states there is no doubt that they are con- 

 specific. Hence a second locality may be definitely recorded for this 

 interesting composite shrub. 



Sclerocarpus multifidus Greenman, sp. nov. 



Herba annua (?); caule erecto vel ascendente; ramis ramulisque 

 striatis strigosisque ; foliis alternis petiolatis vel summis sessilibus 

 ambitu ovatis vel oblongo-ovatis 5-8 cm. longis 1-4 cm. latis pinnato- 

 multifidis utrinque adpresso-pubescentibus subtus pallidioribus, lobis 

 lineari-lanceolatis acutis integris vel irregulariter dentatis ; inflorescentiis 

 terminalibus ; capitulis longe pedunculatis, pedunculis 4-16 cm. longis 

 nudis plus minusve adpresso-pubescentibus; bracteis invdlucri foliaceis 

 lanceolatis 7-12 mm. longis acutis hirsutis persistentibus ; corollis 

 florum radii flavis, tubo gracili 2.5-3 mm. longo, radiis oblongo- 

 ovatis bidentatis supra minuto-papillosis subtus parce strigosis; paleis 

 receptaculi achaenia maturata arte involventibus 4-5 mm. longis 

 tuberculatis et parce hirsutis; achaeniis obliquo-obovatis circiter 4 mm. 

 longis striatulis glabris. MEXICO. State of Guerrero: Rio Balsas, 

 26 August, 1910, C. R. Orcutt, no. 4177 (hb. Field Museum, cat. no. 

 282101, type). The character of the leaves renders this a unique and 

 very easily recognized species. 



Sclerocarpus Orcuttii Greenman, sp. nov. 



Herba annua (?); caule erecto ramoso purpurascenti ; ramis ramulis- 

 que striatis parce substrigosis ; foliis alternis petiolatis ovatis 2-3.5 cm - 

 longis 1-2 cm. latis acutis vel obtusis subintegris trinerviis utrinque 

 strigoso-hispidis basi cuneatis subtus pallidioribus; petiolis usque ad 

 1.5 cm. longis; pedunculis 1-6 cm. longis subadpresso-hispidis ; capitulis 

 radiatis; bracteis exterioribus involucri foliaceis obovatis 5-6 mm. 

 longis 3-5 mm. latis submucronatis strigoso-hispidis; radiis ovato- 

 oblongis juventate aurantio-flavis ; paleis florum disci achaenia ma- 

 turata amplectentibus parce tuberculatis hirsutisque; achaeniis obliquis 

 2.5-3 mm. longis epapposis glabris. MEXICO. State of Colima: 

 Colima, 24 October, 1910, C. R. Orcutt, no. 4599 (hb. Field Museum, cat. 

 no. 283411, type). 



SCLEROCARPUS UNISERIALIS (Hook.) Benth. & Hook, f., var. papposus 



Greenman, var. nov. 



Caulis dense strigoso-pubescens ; foliis inferioribus longe petiolatis 

 subtus incano-strigosis ; achaeniis oblongo-obovatis glabris, pappo 

 coronato-lacinato 2.5 mm. longo. MEXICO. State of Guerrero: Rio 

 Balsas, 26 August, 1910, C. R. Orcutt, no. 4208 (hb. Field Museum, 



