400 PROCEEDINGS OF THE AMERICAN ACADEMY. 
tereti laevissimo ; foliis lanceolati-ovatis tenuibus sessilibus acutissimis 
basi rotundatis ; cymis laxe etiam atque etiam dichotomis; floribus in 
dichotomis solitariis 1.5 em. longis erectis ; pedicellis 8-30 mm. longis 
rectis nudis; calycis lobis 4 anguste lanceolatis acutissimis in media 
parte herbaceis margine scariosis vix carinatis ex alatis; corolla rubes- 
centi vel purpurascenti fere ad mediam partem 4-secta ; lobis ovatis 
acutis ; filamentis gracilibus, basi exappendiculatis ; antheris mucro- 
natis. — British Honporas: about plantations and in the openings 
of the forests, near Manatee Lagoon, 27 January, 1906, Prof. Morton 
E. Peck, no. 318 (type, in Gray Herb.). A species considerably resem- 
bling S. listanthoides (Griseb.) Benth. & Hook. f£, but readily distin- 
guished by its pedicelled flowers. 
Evolvulus sericeus Sw., var. glaberrimus, n. var., ubique gla- 
berrimus gracillimus, caulibus a basi patenti-ramosis suberectis 2.5-3 
dm. altis ; calyce etiam glaberrimo, aliter formae typicae simillimus. — 
British Honpvras: low pine ridge near Manatee Lagoon, 28 March, 
1906, Prof. Morton E. Peck, no. 372 (type, in Gray Herb.). A form 
remarkable for the complete absence of the silky pubescence, which is 
to some extent present in all other specimens examined, even those of 
the form glabratus Chod. &. Hassl., which has decidedly silky-villous 
yces. ; 
Schwenkia oxycarpa, n. sp., perennis erecta suffrutescens scoparia 
5-6 dm. alta; radice fibrosa; caulibus teretibus cortice fusco-griseo 
obtectis ; ramis gracillimis ascendentibus vel erectis viridibus teretibus ; 
foliis linearibus acutis sessilibus crassiusculis subglabris 5-7 mm 
longis vix 1 mm. latis saepissime curvatis vel tortis 1-nervils; inflo- 
rescentia ca. 1 dm. longa gracillima spiciformi; floribus fasciculats 
sessilibus parvis ; calyce turbinato ca. 1.3 mm. longo obscure strigilloso, 
dentibus lanceolatis acutis tubum subaequantibus ; corolla 4 mm. longa 
atrocyanea rectiuscula, limbi dentibus 5 clavellatis quam sinuum lobt 
obovati crassiusculi subbipartiti vix longioribus ; staminibus fertilibus 
4 didynamis tubo corollae inclusis ; capsula lanceolato-ovoidea acuta 
2 mm. longa firmiuscula minute papillosa. — British HonDURAS: open 
damp ground, near Sibune River, 4 May, 1906, Prof. Morton E. Peck, 
no- 417a (type, in Gray Herb.). This noteworthy species, through some 
accident associated with no. 417 (an Angelonia), is clearly of § Brachy- 
helus and most nearly approaches the east Brazilian S. fase? ta 
Benth. It differs, however, in its essentially glabrous stem and tha- 
chises, its never fascicled leaves neither perceptibly cuneate at the base 
nor revolute on the margin, and finally in its lance-ovoid capsule. 
__ Angelonia ciliaris, n. sp., caulibus gracilibus inaequaliter Jone 
latis in angulis conspicue ciliatis ; foliis sessilibus oblongo-lanceolatis 
