VOL. 5] New Spectes of Mexican Plants. 251 
tomentoso-hirsutis; foliis parce pubescentibus, alternatis numero- 
Sis lanceolatis, 1-2 cm. longis, 4-8 mm. latis, in petiolum 2-3 
mm. longum angustatis; floribus in axillis solitariis vel ramos 
numerosos laterales terminantibus, pedicellis 1-2 cm. longis; 
petalis purpureis albo-marginatis, spatulatis 5 mm. longis; sta- 
mine petaloideo late obcordato fere albo; capsulis 3 mm. diame- 
tro ad apicem dehiscentibus. 
Collected in Barranca de Tenampa, near Zacuapan. No. 2303. 
Gaultheria angustifolia. Frutex ramis viscosis, foliosis; 
foliis coriaceis, breviter petiolatis anguste lanceolatis acuminatis, 
basi cuneatis, argute serratis, glaberrimis, utringue reticulatis; 
racemis glanduloso-hirsutis, 6-10-floris, axillaribus vel terminali- 
bus; pedicellis 5 mm. longis bracteas superantibus infra medium 
2-bracteolatis: calycibus 5—partitis tomentosis: corollis urceolatis 
7 mm. longis, lobis recurvis: staminibus 10; filamentis pilosis: 
antherarum loculis apice 2-aristatis. Capsule maturze non sup- 
petunt. 
Collected on rocky slopes of Ixtaccihuatl, at 9-10,000 ft. alti- 
tude. No. 2040. 
Asclepias Purpusii. Erecta puberula, foliis oppositis, breviter 
petiolatis, oblongis acuminatis membrenaceis, basi rotundatis vel 
cuneatis; umbellis interpetiolaribus pedunculatis, 5-10~floris, 
beduneulis 1.5-2 cm. longis; pedicellis 2 cm. longis; calycis seg- 
mentis ovato-lanceolatis; corollis ut videtur flavescentibus, lobis 
ovato-oblonyis, 1 cm. longis; cucullis supra columnam 8 mm. 
longis antheris longioribus, apice rotundatis; ligulis longiuscule 
exsertis; antherarum alis triangularibus basi rotundatis. Fol- 
liculi ignoti. 
The stems are 6 dm. and more long, the petioles about 1 cm. 
long. Collected at Zacuapan, where it is not common. No, 
209 . 
Gonolobus xanthotrichus. Herbaceus, ferrugineo-hirsutus 
Pilis patentibus; foliis late oblanceolatis, longe acuminatis, basi 
rotundatis, 8.5 cm. longis, 3 cm. latis; pedunculis bifloris, 5 mm. 
longis; pedicellis 3-4 cm. longis; corollis atropurpureis rotatis, 
lobis ovato-lanceolatis extus hirsutis vix reticulatis; calycibus 
hirsutis, segmentis late ovato-lanceolatis; corona duplice, exteri- 
