26 PROCEEDINGS OF THE AMERICAN ACADEMY. 



pallidioribus 3-6 cm. longis 2.4-3.6 cm. latis basi cordatis; petiolis 

 4-10 mm. longis ; iiiflorescentia terminal! ca. 1.5 dm. longa interrupte 

 spiciformi, verticellastris inferne subremotis superne approximatis densis 

 multifloris, cymulis brevibus densissimis, bracteis inferioribus foliaceis 

 ovatis vel ovato-lanceolatis 2-2.5 cm. longis petiolatis superioribus 

 lanceolatis vel linearibus ; pedicellis brevissimis purpureis griseo- 

 puberulis, calyce subcylindrato anthesi 1 cm. longo puberulo inferne 

 viridi superne laete purpureo vel violaceo, dentibus argutissimis 

 lineari-lanceolatis ca. 3 mm. longis maturitate subiuduratis saepe cur- 

 vatis plus minusve patentibus ; corolla purpurea gracili griseo-puberula 

 apicem versus deorsum curvata 2 cm. longa, labiis brevibus superiore 

 subgaleato ; staminibus breviter exsertis. — Alvarez, San Luis Potosi, 

 Mexico, 5-10 September, 1902, Dr. Edward Palmer, no. 53 (type, in 

 hb. Gray), distributed as Cedronella mexicana Benth. Previous col- 

 lections of what appears to be the same species have been made as 

 follows : Mexico, without precise locality, Sumichrast (hb. Gray), Coul- 

 ter, no. 1078 (hb. Gray) ; in mountains near Morales in valley of San 

 Luis Potosi, 1876, Schaffner, no. 682 (hb. Gray) ; region of San Luis 

 Potosi, 1878, Parry & Palmer, no. 762 (hb. Gray). This species 

 differs clearly from B. meximnum (HBK.) Briq. in its deltoid-ovate 

 leaves, shorter corolla, etc. It appears to differ in the same respects 

 from B. cocdneum (Greene) Briq., known to the writer from descrip- 

 tion, ■■ — a characterization which fails to convince the reader that 

 B. Goccineum is distinct from the real B. mexicanum. B. Palmeri 

 differs from B. betonicoides (Lindl.) Briq. in its much shorter petioles, 

 longer calyx-teeth, etc. 



Brittonastrum Wrightii (Greenman) Robinson, n. comb. Cedro- 

 nella Wrkjht'd Greenman, Proc. Am. Acad. xli. 244 (1905). The sep- 

 aration of the American simple-leaved species of Cedronella as a new 

 genus Brittonastrum now generally accepted necessitates the transfer 

 of Dr. Greenman's excellent species C. Wrightii. 



Russelia Pringlei Robinson, n. sp., caulibus subsimplicibus 1 m. 

 vel ultra longitudine teretibus ca. 8-costatis niveo-tomentosis ; inter- 

 nodiis 5-6 cm. longis ; ramis elongatis gracilibus 4-6-angulatis griseo- 

 tomentosis ; foliis oppositis vel ternis inaequalibus lanceolato-ovatis 

 1.5-2 cm. longis 6-10 mm. latis acutatis basi subcuneatis serrato-den- 

 tatis supra viridibus crispe puberulis et squamiferis rugosis subtus 

 pallidioribus densius squamiferis et praesertim in venis nervisque 

 griseo-tomentellis ; inflorescentia 3-4 dm. longa 3-4 cm. lata ; cymulis 

 oppositis vel ternis ; verticellis 3-5 cm. distantibus ; pedicellis fili- 

 formibus griseo-pubescentibus 3-4 mm. longis ; calycis 5 mm. longi 

 lobis ovato-lanceolatis caudato-acuminatis dorso squamiferis ; corolla 



