ROBINSON. — NEW SPERM ATOPHYTES, CHIEFLY FROM MEXICO. 27 



coccinea tubiformi 16 mm. longa glaberrima, lobis rotundatis 1.5 mm. 

 longis ; capsula ovoidea acuminata 6 mm. longa glabra. — On vertical 

 walls of limerock, Iguala Canon, near Iguala, Guerrero, Mexico, 28 

 December, 1906, C. G. PrhujU, no. 10,367 (type, in hb. Gray). A 

 species peculiar in its terete canescent-tomentose stem. 



Stemodia macrantha Robinson, n. sp., suffrutescens 1 m. vel ultra 

 alta ; caulibus decumbentibus gracilibus teretibus pubescentibus ; ramis 

 saepius simplicibus erectis vel ascendentibus viridibus patenter pilosis 

 3-6 dm. longis, internodiis 3-10 cm. longis ; foliis lanceolato-ovatis 

 utroque angustatis 5-6 cm. longis 2.5-3 cm. latis basi cuneata excepta 

 crenato-serratis supra atroviridibus adprease pilosis subtus paulo palli- 

 dioribus in costis et venis lateralibus pinnatis hirsutulis ; petiolis 1 cm. 

 longis hirsutulis superne alatis ; inflorescentia terminali 1-4 dm. longa 

 perlaxa folioso-bracteata, pedicellis filiformibus flexuosis glanduloso- 

 pubescentibus unifloris 2-4 cm. longis ascendentibus ex axillis brac- 

 tearum saepissime ternis vel quaternis orientibus ; calycis laciniis 

 glanduloso-pulverulis et hispidulis lanceolato-linearibus superioribus 

 anthesi usque ad 7 mm. longis infimis paulo brevioribus omnibus a 

 basi gradatim angustatis sed apice vero obtusiusculis ; corolla 1.8-2 

 cm. longis, tubo viridi-flavescenti cylindrato ca. 13 mm. longo 4 mm. 

 diametro purpureo-nervio intus externeque piloso ad fauces distincte 

 sursum curvato, limbo laete purpureo, lobis suborbicularibus subae- 

 qualibus apice saepissime retusis ; staminibus brevioribus mediae parti 

 tubi affixis 3 mm. longis longioribus paulo supra basin tubi affixis 

 8 mm. longis omnibus inclusis antheriferis glabris ; capsula ovoidea 

 5 mm. longa atrobrunnea a calyce persistenti circumdata. — Shaded 

 bluffs of the deep barranca, near the foot of the Falls of Tzararacua, 

 below Uruapan, Michoacan, Mexico, 28 January, 1907, C. G. Pringle, 

 no. 10,356 (type, in hb. Gray). This species is amply distinguished 

 from its Mexican congeners by its much larger flowers, which in fact 

 are decidedly showy for the genus. 



Lobelia Nelsonii Fernald, var. fragilis Eobinson & Fernald, n. var. 

 a forma typica recedit foliis utrinque viridibus juventate sparse pilo- 

 sulis mox omnino glabratis lineari-lanceolatis multo brevioribus, maxi- 

 mis ca. 7 cm. longis 8-10 mm. tantum latis. — Mexico, C. G. Pringle, 

 no. 10,360 (type, in hb. Gray). This variety shares with the typical 

 form the soft woody stems and branches as well as- all the more impor- 

 tant characteristics of the inflorescence. The varietal name is suggested 

 by the extreme brittleness of the branches, at least when dried. The 

 variety, like the tyi)ical form, has numerous showy flowers with bright 

 scarlet corolla. Both plants seem worthy of cultivation. 



Piqucria (Subg. Phalacraea) longipetiolata Robinson, n. sp., 



