URTICACEA. 161 
3. Phenax mexicanus, Wedd. Monogr. Urtic. p. 500; DC. Prodr. xvi. 1, 
p. 235%, 
Phenax gaudichaudianus, Wedd. in Ann. Sc. Nat. série 4, i. p. 193. 
Phenaz galeottianus, Bl. Mus. Bot. Lugd. Bat. 11. p. 227. 
SoutH Mexico, region of Orizaba (Bourgeau, 2811; Miller, 277), Cordillera of Oaxaca, 
at 3000 to 4000 feet (Galeotti, 325). Hb. Kew. 
4, Phenax sonneratii, Wedd. in DC. Prodr. xvi. 1, p. 23527. 
Phenax vulgaris, Wedd. in Ann. Se. Nat. série 4, i. p. 192. 
Behmeria elongata, Fisch. ; Jacq. Ecl. Pl. t. 135; Liebm. in K. Dansk. Vidensk. Selsk. Skrift. ser. 5, 
ii. p. 809 (reprint, p. 25). . 
Souta Mrxico, Jalapa (Schiede & Deppe), Colipa (Liebmann); GuatemaLa, Mazate- 
nango (Bernoulli)—CotomBia to Peru and Braziu and in the Wesr InpiEs; also in 
Mauritius and Matacca, though probably introduced. Hb. Kew. 
26. PARTETARTIA. 
Parietaria, Linn. Gen. Plant. n. 1152; Benth. et Hook. Gen. Plant. iii. p. 392. 
About eight herbaceous species, widely spread in temperate regions, rarer within 
the tropics. 
1. Parietaria debilis, Forst. Fl. Ins. Austr. Prodr. n. 387; DC. Prodr. xvi. 1, 
p. 2354; Wedd. Monogr. Urtic. p. 517, t. 17. figg. 21-25. 
Mexico (ex Weddeli)—This species is spread nearly all over the WoRLD, except 
Europe and the frigid regions. 
2. Parietaria pennsylvanica, Miihlenb. Cat. Pl. Am.; DC. Prodr. xvi. 1, 
p. 2354" (varietates). 
Parietaria orizabe et P. linguefolia, Liebm. in K. Dansk. Vidensk. Selsk. Skrift. ser. 5, ii. p. 313 
(reprint, p. 29). 
VERMONT and WISCONSIN southward to Texas.—Mexico, common, and found at an 
altitude of 10,000 feet on the peak of Orizaba (Liebmann). Hb. Kew. 
Order CXXVIII. PLATANACE. 
Platanacee, Benth. et Hook. Gen. Plant. i. p. 396. 
A monotypic order. 
1. PLATANUS. . 
Platanus, Linn. Gen. Plant. n. 1075; Benth. et Hook. Gen. Plant. in. p. 396. 
Five or six arboreous species, inhabiting Eastern Europe, Temperate and Subtropical 
Asia, and North America. The Mexican species need revision. 
BIOL. CENTR.-AMER., Bot. Vol. III., January 1883. y 
