ROBINSON. — DIAGNOSES OF TROPICAL AMERICAN PHANEROGAMS. 615 
Amoen. Monac. (Auswahl merkwiirdiger Pflanzen — Choix des plantes 
remarquables) 11, t. 8 (1830). Caconapea gratioloides Cham. & 
Schlecht. Linnaea, viii. 29 (1833). Herpestis gratioloides Benth. in 
Hook. Comp. Bot. Mag. ii. 57 (1836). Monniera 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 stricta 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-flora ; 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, 0. 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-floris 1.2 em. diametro ; involucri 
campanulati squamis pluriseriatis valde inaequalibus purpurascentibus 
acutis mucronatisque ciliolatis, interioribus oblongis, exterioribus 
lanceolatis vel lanceolati-linearibus multo brevioribus ; corollis i 
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. ¢. 
Conzatti, no. 1327 (type, in hb. Gray); also previously collected in 
somewhat less mature condition on the Cerro de San Felipe, 
