RUBIACEA. 65 
10. Galium leucotrichum, Hemsley, Diag. Pl. Nov. pars tertia, p. 53. (Tab. 
XLI. figg. 4-6.) 
Suffrutescens, valde ramosum, ramis floriferis setosis tetragonis, internodiis brevibus, foliis quaternis 
sessilibus brevibus oblongo-ellipticis obtusiusculis subtrinerviis subtus dense albo-pilosis, 
floribus dioicis vel saltem unisexualibus minutis trichotomo-cymosis, fructu parvo longe molli- 
terque albo-piloso. 
Herba suffrutescens, valde ramosum, ramis annotinis sepe longe repentibus, levibus, glabris, 
nitidis, teretibus, lignescentibus, aphyllis, hornotinis vel floriferis erectis vel adscendentibus, 
robustiusculis, 6—-9-pollicaribus, internodiis brevibus aut brevissimis. Folia quaterna, crassi- 
uscula, asperula, sessilia, oblongo-elliptica, 83-6 lineas longa, obtusiuscula (in siccis margine 
plus minusve recurvo), subtrinervia, subtus dense albo-pilosa vel hispidula, supra glabrescentia, 
nitida. Flores unisexuales (dioici ?), dense trichotomo-cymosi, breviter pedicellati, g fere 
lineam diametro, ? semilineam diametro ; corolla extus parce et longiuscule pilosa. Fructus 
parvus, longe molliterque albo pilosus. 
SoutH Mexico, Vera Cruz to Orizaba (Miller, 174), San Cristobal, region of Orizaba 
(Bourgeau, 3125), Tehuacan (Liebmann, 238), Orizaba (Sumichrast, 514). Hb. Kew. 
EXPLANATION OF TAB. XLI. Fiae. 4-6. 
Fig. 4, portion of a plant, natural size; 5, a fruit, and 6, a leaf, magnified. 
11. Galium mexicanum, H. B. K. Nov. Gen. et Sp. iii. p. 337. 
Sout Mexico, near Guanaxuato, 6000 to 7000 feet (Humboldt & Bonpland), Mirador, 
2500 to 4000 feet (Galeott:, 2616; Linden, 517; Liebmann, 233), Tizapan, valley of 
Mexico (Bourgeau, 699), Orizaba (Botteri, 840, 841); Panama, Boquete (Seemann, 
1598)? Hb. Kew. 
12. Galium obstipum, Schl. in Linnea, ix. p. 592. 
 «. latifolium, Schl. loc. cit. 
SoutH Mzxico, shady woods, Jalapa (Schiede & Deppe), Orizaba (Botteri, 835, 837), 
Real del Monte (Coulter, 185), Chinantla (Liebmann, 222), woods at Yavezia, Eastern 
Cordillera of Oaxaca, 7000 to 8000 feet (Galeotti, 2656). 
B. angustifolium, Schl. loc. cit. 
SoutH Mexico, San Miguel del Soldado (Schiede & Deppe). Hb. Kew. 
This species may be the same as G. uncinulatum, DC. 
138. Galium orizabense, Hemsley, Diag. Pl. Nov. pars tertia, p. 54. 
Herbaceum, hispidulum, vix asperulum, ramis flexilibus usque 5-pedalibus graciliusculis tetragonis, 
foliis quaternis lineari-lanceolatis obtusiusculis obscure trinerviis tenuibus, floribus parvis 
numerosissimis trichotomo-cymosis, petalis ovato-oblongis distincte acuminatis, fructu dense 
uncinato-setuloso, setulis vix rigidis. 
Herba perennis, hispidula, vix asperula, valde ramosa,ramis elongatis, usque 5-pedalibus, graciliusculis, 
tetragonis, flexilibus, debilibus vel interdum robustiusculis, infra sublignosis. Folia quaterna, 
tenuia, subsessilia, lineari-lanceolata vel fere oblonga, 3-10 lineas longa, obtusiuscula, tota 
sparse hispidulo-pilosa, vix scabrida, obscure trinervia. Flores numerosissimi, trichotomo- 
BIOL. CENT.-AMER., Bot. Vol. II., ApriZ 1881. k 
