326 FIELD MUSEUM OF NATURAL HISTORY BOTANY, VOL. II 



A plant of quite unusual habit in this genus. The numerous linear 

 leaves, tufted at the ends of the branches, and the naked stem and 

 lower portion of the branches, roughened by the persistent bases of old 

 leaves, render it of striking appearance, which indeed at first glance is 

 not unlike a coniferous growth. 



Senecio rivalis Greenman, sp. nov. 



Verisimiliter arborescens; caule tereti glabro vel juventate arach- 

 noideo-tomentuloso foliaceo; foliis alternis petiolatis oblongo-oblan- 

 ceolatis 7-14 cm. longis 2.5-4 cm. latis acutis supra livido-viridibus 

 glabris subtus dense albo-tomentosis, marginibus integerrimis revolu- 

 tisque, basi in petiolam sensim gradatim angustatis; petiolis usque ad 

 2 cm. longis; inflorescentiis terminalibus cymosis archnoideo-tomen- 

 tosis; capitulis discoideis 8-10 mm. altis calyculatis; bracteolis subdel- 

 toideis; squamis involucri 8 lanceolatis vel oblongo-lanceolatis 8 mni. 

 longis 2-3 mm. latis acutis vel obtusis; floribus circiter 20; pappi setis 

 ruf o-albidis ; achaeniis parce hirtellis. In deciduous woods and thickets, 

 near water, Sierra Nipe, near Woodford, Province of Oriente, Cuba, 

 altitude 450-550 m., 5 January, 1910, /. A. Shafer, no. 3454 (hb. Field 

 Museum, cat. no. 294775, and hb. N. Y. Bot. Garden). 



Senecio Shaferi Greenman, sp. nov. 



Caule lignescens; ramis subteretibus striatis lanato-tomentosis ; 

 foliis suboppositis vel distincte alternis petiolatis lanceolatis vel lan- 

 ceolato-ovatis 5-8 cm. longis 1.5-2.5 cm. latis acutis integris basi sensim 

 in petiolam coarctati supra atro-viridibus juventate lanato-tomentosis 

 mox glabratis subtus conspicue reticulato-venosis dense et persistente 

 fulvo-tomentosis ; inflorescentiis terminalibus corymbo-cymosis pedun- 

 culatis multicapitatis ; capitulis discoideis 10-12 mm. altis calyculatis; 

 involucri squamis 5 linearibus acutis 6 mm. longis fulvo-tomentosis; 

 floribus 5 exsertis; pappi setis albis; achaeniis cano-hirtellis. In moist 

 thickets on the Sierra Nipe, along trail between Piedra Gorda and 

 Woodfred, serpentine formation, Oriente, Cuba, altitude 400-500 m., 

 8 December, 1909, /. A. Shafer, no. 3107 (hb. Field Museum, cat. no. 

 294771, and hb. N. Y. Bot. Garden). 



Senecio trichotomus Greenman, sp. nov. 



Fruticosus ; ramis ramulisque teretibus striatis glabris vel glabrescen- 

 tibus ; foliis alternis brevi-petiolatis anguste lanceolatis 2-5 cm. longis 3-8 

 mm. latis acutis vel obtusis supra atro-viridibus et glabris marginibus 

 integris revolutisque basi in petiolum angustatis; inflorescentiis dense 

 cymosis; capitulis subcylindratis calyculatis 7-8 mm. altis discoideis; 

 involucri squamis 5 lineari-oblongis 6-7 mm. longis acutis vel obtusis 



