24 PROCEEDINGS OF THE AMERICAN ACADEMY. 



glabro nutanti ; filamentis glabris ; stylo 1 cm. longo ; capsula ca. 1 cm. 

 diametro obtuse 3-lobata subsphaerica ; seminibus viridescenti-griseis 

 angulatis 6 mm. longis. — Canon walls of limerock, Iguala Caiion, 

 near Iguala, Guerrero, Mexico, alt. 760 m., 28 December, 1906, C. G. 

 Pringle^ no. 13,914 (type, in hb. Gray). This noteworthy species is 

 probably the most showy of the genus. It differs from P. bracteatus 

 (Jacq.) Boiss. in having pubescent leaves, denser inflorescence, and 

 larger much more caudate-acuminate and strongly colored bracts. 



Bonplandia linearis Robinson, n. sp., herbacea ramosa dense caes- 

 pitosa gracilis 4 dm. vel ultra alta ubique glanduloso-pubescens ; ramis 

 erectis vel ascendentibus ; foliis alternis anguste linearibus 3-4.5 cm. 

 longis vix 2 mm. latis sessilibus attenuatis cum lobis lateralibus 2 an- 

 gustis late patentibus instructis; racemis erectis laxifloris 1-1.5 dm. 

 longis ; floribus saepissime geminis in pedicellis erectis ca. 1 cm. longis 

 nutantibus ; calyce tubuloso 15-striato et venoso-reticulato anthesi 8 

 fructifero 11 mm. longo leviter curvato paulo nigrescenti, dentibus 

 lanceolato-deltoideis acutis ; corolla cyanea ca. 2 cm. longa ; tubo gra- 

 cili ad orem calycis leviter deflexis ; lobis anguste obovatis retusis late 

 patentibus ca. 12 mm. longis ; filamentis subaequalibus glabris longe 

 exsertis ; stylo filiformi glabro, ramis stigmatiferis 3 linearibus papil- 

 losis 1.2 mm. longis; ovario ovoideo glabro. — Lava fields, near Corn 

 Station, above Uruapan, Michoacan, Mexico, 26 January, 1907, C. G. 

 Pringle, no. 10,364 (t)q)e, in hb. Gray). This species obviously belongs 

 to the hitherto monotypic genus Bonplandia. It differs strikingly from 

 the common B. geminiflora Cav. in its narrowly linear leaves. 



Brittonastrum Barberi Robinson, n. sp., herbaceum 4-6 dm. vel ul- 

 tra altum ; caulibus gracilibus suberectis simplicibus basi rubescentibus 

 alibi pallide viridibus ubique crispe griseo-puberulis ; foliis ovato-lance- 

 olatis crenatis obtusis vel superioribus acutis vel etiam subattenuatis 

 2-3.5 cm. longis 1-2 cm. latis subtus pallidioribus utrinque crispe griseo- 

 puberulis superioribus distantibus ; petiolis 2-5 mm. longis ; inflore- 

 scentia anguste paniculata 8-22 cm. longa 5 cm. diametro superne 

 densiuscula ; bracteis inferioribus lanceolatis subsessilibus 1-1.5 cm. 

 longis superioribus valde reductis ; inflorescentiis secundariis ascen- 

 dentibus multifloris griseo-puberulis vel -pulverulis inferioribus plus 

 minusve distantibus ; bracteolis subulatis minimis et pedicellis pur- 

 purascentibus ; calyce anguste tubulato anthesi deorsum attenuate 

 fructifero deinde turgido 10-12 mm. longo pulcberrime purpureo 

 griseo-puberulo et atomifero, dentibus lanceolatis parvis acutis erectis 

 1.5-2 mm. longis; corolla molliter puberula anguste tubulata' leviter 

 curvata 2.6 cm. longa, limbo valde ringenti, labio superiore erecto sub- 

 ■cucullato inferiore deflexo ca. 2 mm. longo; staminibus juxta labium 



