ROBINSON. — DIAGNOSES OF TROPICAL AMERICAN PHANEROGAMS. 615 



Amoen. Monac. (Auswahl merkwiirdiger Pflanzen — Choix des plantes 

 reinarquables) 11, t. 8 (1830). Caconapea gratioloides Cham. & 

 Schlecht. Linnaea, viii. 29 (1833). Herpestis gratioloides Benth. in 

 Hook. Comp. Bot. Mag. ii. 57 (1836). Monnkra semiserrata Ktze. 

 Rev. Gen. ii. 463 (1891). Bacopa gratioloides Chod. & Hassl. Bull. 

 Herb. Boiss. ser. 2, iv. 288 (1904). 



Bacopa stricta (Schrad.), n. comb. Herpestis striata Schrad. in 

 Link, Enum. ii. 142 (1822). H domingensis Spreng. Syst. ii. 801 

 (1825). H. polyantha Benth. in Hook. Comp. Bot. Mag. ii. 57 (1836). 

 Monniera stricta Ktze. Rev. Gen. ii. 463 (1891). 



Heterotoma Pringlei, n. sp., annua pusilla erecta 5-11 cm. alta 

 glaberrima glaucescens ; foliis radicalibus parvis ovato-rhomboideis 

 dentato-angulatis obtusis 3-5 mm. longis 1-4 mm. latis saepius purpu- 

 rascentibus basi cuneatis, petiolo glaberrimo 3-7 mm. longo ; foliis 

 caulinis 1-2 minimis bracteiformibus linearibus vel anguste lanceolatis ; 

 racemo ca. 4 cm. longo 3-5-fiora ; bracteis linearibus 2-4 mm. longis ; 

 pedicellis gracilibus flexuosis patentibus 6-8 mm. longis 1-floris ; calyce 

 3-4 mm. longo valde gibboso vel breviter calcarato, dentibus limbi sub- 

 aequalibus brevibus lineari-oblongis ; corolla azurea 7 mm. longa, den- 

 tibus superioribus 2 angustis erectis 1.5 mm. longis, labio inferiore 3- 

 lobato, lobis obovatis rotundatis patentibus. — Chalky mountains, 

 Nuevo Leon, Mexico, 7 November, 1904, C G. Pringle, no. 13,274 

 (type, in hb. Gray). 



Vernonia Conzattii, n. sp., herbacea, erecta ; caulibus striato- 

 angulatis sordide tomentosis foliosis apice corymboso-ramosis ; foliis 

 ovato-oblongis vel ovato-lanceolatis firmiusculis obscure serrulatis vel 

 integriusculis acuminatis breviter petiolatis basi acutiusculis vel 

 obtusis penninerviis supra rugosis scabris subtus paulo pallidioribus 

 reticulato-venosis saltim juventate tomentosis; inflorescentia umbelli- 

 formi terminali valde convexa ; pedicellis rectiusculis 1.2-3 cm. longis 

 glanduloso-tomentellis cum bracteolis 1-2 parvis lanceolati-linearibus 

 saepissime munitis ; capitulis ca. 35-fioris 1.2 cm. diametro ; involucri 

 campanulati squamis pluriseriatis valde inaequalibus purpurascentibus 

 acutis mucronatisque ciliolatis, interioribus oblongis, exterioribus 

 lanceolatis vel lanceolati-linearibus multo brevioribus; corollis pur- 

 pureis glabris ca. 1 cm. longis, dentibus limbi 5 lineari-oblongis ob- 

 tusis : achaeniis (immaturis) 1.8 mm. longis costatis subglabris plus 

 minusve granuliferis ; pappi setis numerosis albidis, interioribus 6-7 mm. 

 longis, exterioribus paucis ca. 2 mm. longis. — Sta. Ines del Monte, 

 Zimatlan, Oaxaca, Mexico, alt. 2700 m., 8-9 December, 1905, Prof. C. 

 Conzatti, no. 1327 (type, in hb. Gray) ; also previously collected in 

 somewhat less mature condition on the Cerro de San Felipe, Oaxaca, 



