Nov., 191 2. Diagnoses or Spermatophytes Greenman 349 



Tagetes jaliscensis Greenm. Proc. Am. Acad. xl. 47 (1904). 



Specimens well exemplifying this species were collected on hillsides 

 along the road to San Domingo mine, altitude 1580 m., near Etzatlan, 

 State of Jalisco, Mexico, 6 October, 1908, Barnes & Land, no. 287 (hb. 

 Field Museum). 



Liabum adenotrichum Greenman, sp. nov. 



Frutex 3-4 m. altus; caulibus juvenilibus floccoso-tomentosis glabratis 

 striatisque; foliis oppositis vel ternatis petiolatis trinervatis ovatis 

 6-13 cm. longis 2-7.5 cm. latis acuminatis calloso-denticulatis ad basin 

 abrupte contractis cuneatis et petiolam decurrentibus supra arachnoideo- 

 tomentulosis glabratisque subtus densissime albo-lanatis petiolis 2.5- 

 3 cm. longis subglabratis ; inflorescentiis paniculatis terminalibus albo- 

 tomentosis et pilis stipitato-glandulosis intermixtis ; capitulis discoideis 

 circiter 20-floris; involucri squamis 4-5-seriatis acutis vel obtusis 

 exterioribus triangulari-ovatis acutis circiter 3 mm. longis striatis 

 externe sparsissime tomentosis et pilis stipitato-glandulosis intermixtis, 

 squamis interioribus gradatim majoribus lanceolatis vel lanceolato- 

 oblongis acutis vel obtusis 3-10 mm. longis; corollis 11-12 mm. longis 

 flavidulis sparsissime pilosis; achaeniis circiter 2 mm. longis hirsuto- 

 pubescentibus et stipitato-glandulosis; pappi setis 2-seriatis. Mexico. 

 State of Oaxaca: Cerro de Frujano, Distrito del Centro, altitude 1700 

 m., 15 November, 1908, C. Conzatti, no. 2316 (hb. Field Museum, cat. 

 nos. 239615, 246875). 



In general appearance L. adenotrichum resembles L. glabrum Hemsl., 

 var. hypoleucum Greenm., but differs in the more pointed involucral 

 bracts, the presence of stipitate-glandular hairs in the inflorescence, and 

 pubescent achenes. 



Senecio (Suffruticosi) alvarezensis Greenman, sp. nov. 



Herbaceus perennis ubique floccoso-tomentosus ; caule erecto ramoso 

 striato plus minusve lignoso; foliis in partibus caulinis superioribus 

 laternis sessilibus irregulariter laciniato-lobatis vel subpinnatis ^-8 

 cm. longis 1-4.5 cm - latis supra arachnoideo-tomentulosis subtus dense 

 et persistenter albo-lanatis basi subamplexicaulibus, laciniis irregulariter 

 sinuato-denticulatis margine revolutis; inflorescentiis subcorymboso- 

 cymosis multicapitatis ; capitulis radiatis ca. 1 cm. altis heterogamis; 

 involucris campanulatis calyculatis tomentulosis, bracteolis calyculatis 

 lineari-attenuatis conspicuis; involucri squamis plerumque 21 lan- 

 ceolato-linearis 7-8 mm. longis acuminatis acutis nigro-penicillatis ; 

 floribus feminibus ligulatis io-i2,ligulisflavis;floribus disci ca. 5onumero 

 squamis involucri paullo longioribus ; pappi setis albis ; achaeniis maturatis 



