212 Annals of the Carnegie Museum. 



12-15 mm. long, 5-8 mm. wide, obliquely ovate; filaments of the 

 stamens 6 mm. long, apically geniculate, anthers 5 mm. long, narrowly 

 oblong, with one apical pore, the connective, at the base, dorsally 

 minutely tubercled; ovary usually 5-loculed; style 12-14 rnm. long. 



Arbor parva vel frutex: ramis junioribus. petiolis foliorum, nervis 

 subtus pedunculisque stellato-furfuraceis; foliis anisophyllis, coriaceis, 

 petiolatis, ovatis vel lanceolato-ovatis, basi rotundatis et emarginatis, 

 5-nerviis, demum glabris, 3-5.5 X 5-12 cm., margine integerrimis, 

 anguste revolutis, apice obtusis vel subacutis; petiolis satis gracilibus, 

 8-20 mm. longis; cymis longiuscule pedunculatis, densiuscule pauci- 

 floris; calyce dense stellato-furfuraceo, 7-8 mm. longo, tubo late 

 campanulato suburceolato, basi rotundato, limbo demum in lobos 

 obtusos apice truncato-retusos dorso crasse tuberculatos diviso, lobis 

 3 mm. longis, tuberculis 1.5 mm. altis; petalis utrinque verruculosis, 

 latiuscule longiusculeque unguiculatis, 12-15 mm. longis, 5-8 mm. 

 latis, irregulariter ovatis; staminum filamentis 6 mm. longis, apice 

 geniculatis; antheris 5 mm. longis, anguste oblongis, apice uniporosis; 

 connective basi dorso minute tuberculato; ovario plerumque 5- 

 loculare; stylo 12-14' mm. longo. 



Type. — Along arroyo bank near Los Indios, May 19, 1910, 0. E. 

 Jennings, No. 426. Herbarium, Carnegie Museum. Other specimens 

 of the same species were collected as follows: Swampy margin of 

 pond one mile east of Nueva Gerona, May 6, 1910, 0. E. Jennings, 

 No. 56, and a small tree along an arroyo near Sante Fe, May 25, 1910, 

 0. E. Jennings, No. 55 j. Flowers white. 



This species is a small tree or perhaps more commonly a tall shrub 

 growing in the marginal thicket of ponds, or along the banks of 

 arroyos, and is closely related to Pachyanthus ovatus Cogniaux and 

 P. cordifolius Cogniaux, and there is a possibility that with more 

 complete collections available for study these three species will be 

 best treated as one, under the najne of Pachyanthus ovatus Cogniaux. 

 The present status of the group would not, however, justify such a 

 decision. The specimen {No. 334, Jennings) collected in the xero- 

 phytic sandy pine-barren at Los Indios fits the description of Cog- 

 niaux's ovatus very closely, thus indicating a possible ecological 

 relationship between that species and longifolius. 



