Nov., 1912. DIAGNOSES OF SPERMATOPHYTES GREENMAN 341 



which a part of the material above cited has been hitherto confused. 

 The more striking characters distinguishing L. albicaulis from L. umbel- 

 lata and other species of the immediate group to which it belongs are its 

 smooth ashy white stem and branches, puberulent branchlets, dark 

 green elliptic-lanceolate leaves which are but slightly pubescent on 

 both surfaces. 



Lippia (Rhodolepis) Kellermanii Greenman, sp. nov. 



Frutex, ramis ramulisque plus minusve tetragonis ad nodos com- 

 pressis cortice brunneo tectis dense pubescentibus cum pilis hirsutis et 

 glandulif eris ; foliis brevipetiolatis ovatis 3-18 cm. longis 1.5-10 cm. 

 latis acuminatis crenato-dentatis ad basin cordatis vel abrupte con- 

 tractis et obtusis supra rugosis et scabrido-hispidis subtus hirsuto- 

 tomentosis; petiolis 0.5-1.5 cm. longis pubescentibus; pedunculis 4-6 

 axillaribus usque ad 3.5 cm. longis quam folia multo brevioribus hirsutis 

 et glanduloso-pubescentibus; capitulis subglobosis 12-20 mm. diametro, 

 in apice ramorum folioso-paniculatis, bracteis lato-ovatis vel subreni- 

 formibus 6-10 mm. longis 5-15 mm. latis acuminatis acutis integris 

 utrinque glanduloso-pubescentibus pallido-viridibus et subchartaceis; 

 calyce circiter 2.5 mm. longo bifido villosissimo et brevi-stipitato-glandu- 

 loso; corolla 6 mm. longa obliqua infra glabra supra pubescente albida. 

 GUATEMALA. Department of Amatitlan; Laguna (Lake Amatitlan) 

 altitude 1200 m., 20 January, 1906, W. A. Kellerman, no. 6372 (hb. 

 Field Museum, cat. no. 225152, type). 



Hereto are referred with some doubt the following Guatemalan 

 specimens: Department of Alta Vera Pax, Coban, altitude 1400 m., 

 March, 1903, H. von Tuerckheim, no. 8441 (exsiccatae John Donnell 

 Smith); Coban, altitude 1350 m., February, 1907, H. von Tuerckheim, 

 no. II. 715 (hb. Field Museum). 



The species here proposed has its affinity with L. lupulina Cham., 

 L. umbellata Cav., L. substrigosa Turcz., and L. nutans Rob. & Greenm., 

 but it is amply distinct and easily recognized among all the known 

 species of the genus on account of the large broadly ovate leaf -blade, 

 which is cordate or abruptly contracted at the base, rugose and hirsute- 

 hispid above and sub-tomentose beneath, and glandular hairs inter- 

 mixed with a spreading hirsute pubescence on stem, petioles and 

 peduncles. 



SAL VIA FLACCIDIFOLIA Fernald, Proc. Am. Acad. xliii. 66 (1907). 



This species is well represented by specimens collected on moist 

 hillsides, Honey, State of Jalisco, Mexico, altitude 2130 m., 21 October, 

 1908, Barnes & Land, no. 496 (hb. Field Museum). 



