GBEENMAN. — NEW ANGIOSPERMS FROM MEXICO. 81 



Croton flavescens. Fruticose, 2 to 2.5 m. high : stem branched, 

 covered with a brownish bark ; ultimate branches subangular-co in- 

 pressed, finely stellate-pubescent : leaves alternate, petiolate, ovate to 

 somewhat rhombic-ovate, 4 to 13 cm. long, 3 to 7.5 cm. broad, subro- 

 tund to acuminate at the apex and terminated by a mucro, cordate to 

 obtuse at the base, stellate-pubescent on both surfaces more densely so 

 beneath, yellowish-green ; petioles 1 cm. or less in length : inflorescence 

 terminating the branchlets in moncecious spicate racemes, 5 to 6 cm. in 

 length : pistillate flowers clustered at the base of the spike ; calyx-divi- 

 sions triangular-ovate, acute ; style-branches deeply 2-parted, strongly 

 recurved over the densely stellate-pubescent ovary : capsule nearly or 

 quite 1 cm. long, 8 to 9 mm. in diameter, obtusely 3-angled, somewhat 

 verrucose, closely stellate-pubescent ; carpels slightly compressed above : 

 seeds elliptic-oblong, 6 mm. long, 3 mm. broad, smooth; caruncle 1.5 

 mm. broad, 2-lobed. — Mexico. State of Michoacan : volcanic hills, 

 Monte Leon Station, altitude 1540 m., 29 August, 1902, G. G. Pringle, 

 no. 8667 (hb. Gr.). 



In general aspect G. flavescens resembles certain forms of G. mori- 

 folius, Willd., but it is readily distinguished by the longer less globose 

 and more distinctly triangular capsule. The branches of the stellate 

 hairs in G. flavescens are shorter than in G. morif alius, and the tomen- 

 tum is more or less deciduous revealing the subverrucose character of 

 the surface of the capsule. 



Croton Gonzalezii. Fruticose : stem and branches covered with a 

 grayish bark ; branchlets cinereous-stellate-pubescent : leaves short- 

 petiolate, ovate, 2 to 4 cm. long, one-half as broad, mostly acuminate, 

 obtuse and short- inucronate, inconspicuously denticulate, rounded or sub- 

 cordate at the base, at first minutely stellate-pubescent on both surfaces 

 especially beneath, later glabrate, 3-5-uerved from the base ; petioles 

 2 to 5 mm. long, densely stellate-pubescent: inflorescence terminating 

 the stem and branches in monoecious 1.5 to 3 cm. long spicate racemes ; 

 bracts about 1 mm. long, acute, spreading and persistent : calyx at first 

 stellate-pubescent, later glabrate : petals elliptic-oblong, narrowed and 

 ciliate at the base, 1-nerved : stamens about 14 ; filaments glabrous : 

 capsule 5 mm. long, closely stellate-pubescent. — Mexico. State of 

 Oaxaca : Cuicatlan, altitude 600 m., 16 September, 1899, C. V. Gonzalez, 

 no. 980 (hb. Gr.). 



In general habit Croton Gonzalezii resembles C. Sonorce, Torr. (C. 

 Pringlei, Watson), but differs markedly in the liner stellate tomentum of 

 leaves and fruit, and in the shorter petioles. 



VOL. XXXIX. — 6 



