ROBINSON. — NEW SPERMATOPHYTES, CHIEFLY FROM MEXICO. 25 



superius exsertis. — Near Colonia Garcia in Sierra Madres, Chihuahua, 

 Mexico, alt, 2290 ru., 17 July, 1899, C. H. T. 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. Hart man, no. 122 (hb. Gray), and in southwestern Chihuahua, 

 August to November, 1885, Dr. E. Palmer, no. FF in part. This 

 species differs from the nearly related B. neo-rnexicanum 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.) Briq. by its ovate-lance- 

 olate relatively narrower leaves, longer deep crimson calyx, and longer 

 corolla. 



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 cm. 

 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 

 nee patulis nee 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. 

 2288 m., 15 October, 1905, 0. G. Pringle, no. 10,146 (type, in hb. 

 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.) Briq. in its much 

 shorter petioles; and from the real B. rnexicanum (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 Piobinson, 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 



