ROBINSON. — NEW SPERMATOPHYTES, CHIEFLY FROM MEXICO. 25 
superius exsertis. — Near Colonia Garcia in Sierra Madres, Chihuahua, 
Mexico, alt. 2290 m., 17 July, 1899, C. H. 7. Townsend &: C. M. Bar- 
ber, no. 79 (type, in hb. Gray). Previously collected in imperfect speci- 
mens at Los Pinitos, Sonora, Mexico, alt. 2000 m., 11 October, 1890, 
C. V. Hartman, no. 122 (hb. Gray), and in southwestern Chihuahua, 
August to November, 1885, Dr. £. Palmer, no. FF in part. This 
species differs from the nearly related B. neo-mexicanum Briq. in its 
much longer corolla, more pedicellate flowers, shorter petioles, etc., 
from B. canum (Gray) Briq. in its shorter pedicels, longer less acutely 
- toothed calyx, etc., from B. pallidum (Lindl.) Brig. by its ovate-lance- 
olate relatively narrower leaves, longer deep crimson calyx, and longer 
rolla. 
Brittonastrum ionocalyx Robinson, n. sp., herbaceum ; caulibus 
quadrangularibus breviter molliterque canescenti-puberulis ; foliis del- 
toideo-ovatis sinu patulo cordatis grosse crenatis obtusis 3-5.5 em. 
longis 2.5-4 cm. latis ubique molliter puberulis supra pallide viridibus 
subtus vix pallidioribus albo-nervosis, petiolo 6-10 mm. longo ; inflo- 
rescentia 11-17 cm. longa terminali 5-6 cm. diametro densiuscula ; 
bracteis infimis ovatis serrato-dentatis ca. 1 cm. longis, ceteris gradatim 
minoribus ; cymis furcatis compositis minute granuliferis vel glanduloso- 
puberulis ; floribus erectis vel paulo nutantibus ; calyce cylindrato pul- 
cherrime purpureo griseo-puberulo et atomifero anthesi 1 cm. longo 
fructifero vix accrescenti dentibus lanceolatis acutis 2 mm. longis erectis 
nec patulis nec induratis ; corolla purpureo-coccinea 2.5 cm. longa 
leviter curvata externe molliter puberula, faucibus vix dilatatis, limbo 
ringenti, labio superiore erecto, inferiore pendulo ; staminibus sub labio 
superiore modice exsertis. — Sandia Station, Durango, Mexico, alt, 
9288 m., 15 October, 1905, C. G. Pringle, no. 10,146 (type, in bb. 
Gray). This species differs from B. pallidum (Lindl.) Briq. in its deep 
purple calyx and much more exserted corolla, as well as in its more 
compound inflorescence ; from B. coccineum (Greene) Briq. in its much 
shorter calyx-teeth ; from B. betonicoides (Lindl.) Brig. in its much 
shorter petioles ; and from the real B. mexicanum (HBK.) Briq. in its 
very different foliage. To B. ionocalyx should be referred with scarcely 
a doubt Wright’s no. 1532 from mountains east of Santa Cruz, Sonora, 
which appears to differ only in the fact that the leaves are a trifle less 
cordate at base. 
Brittonastrum Palmeri Robinson, n. sp., herbaceum a basi hori- 
zontali radicanti erectum 6-9 dm..altum ; caule unico simplici acute 
quadrangulari saepius flexuoso vel torto ubique breviter crispeque 
griseo-puberulo ; foliis deltoideo-ovatis grosse crenatis acutiusculis vel 
subacuminatis utrinque griseo-tomentellis vel glabriusculis subtus paulo 
