66 RUBIACEA. 
cymosi, longiuscule pedicellati, polygami, circiter 1-1} lin. diamgtro; corolle glabre lobi ovati 
vel ovato-oblongi, subito acuminati, obtusiusculi. Fructus dense uncinato-setulosus, setulis 
vix rigidis. 
Soutn Mexico, region of Orizaba (Botteri, 838, 839, 836; Sumichrast, 1933 ; Miller, 
1144, 1326; Bourgeau, 2833, 3016), Zimapan (Coulter, 188 in part). Hb. Kew. 
Easily distinguished from all other Mexican species, having only four leaves in a 
whorl, by its long rambling stems, and relatively narrow, thin, almost obtuse leaves, 
scarcely rough to the touch. 
14. Galium proliferum, A. Gr. Pl. Wright. ii. p. 67. 
Norta Mexico, along the Rio Grande. 
15. Galium triflorum, Michx. Fl. Bor.-Amer. i. p. 80.. 
Throughout NortH AMERIcA to—Mexico 2, without locality (Harris).—Also in Nortu- 
EASTERN Europe. Hb. Kew. 
16. Galium uncinulatum, DC. Prodr. iv. p. 600. 
Sout Mexico, between Tampico and Real del Monte (Berlandier). 
17. Galium uropetalum, Hemsley. (Tab. XLI. figg. 7-9.) 
Rubia acuminata, Mart. et Gal. in Bull. Acad. Brux. xi. 1, p. 127. 
South Mexico, pine-forests, peak of Orizaba at 7000 feet, plain of Tehuacan, 
5000 feet, Juquila, &c., Western Cordillera of Oaxaca, 4000 to 6000 feet (Galeotti, 2631 
and 2632). Hb. Kew. 
EXPLANATION OF TAB. XLI. Fiee. 7-9. 
Fig. 7, portion of a plant, natural size; 8, a leaf, and 9, a flower, enlarged. 
18. Galium wrightii, A. Gray, Pl. Wright. i. p. 67. 
Norta Mexico, Santa Cruz, Sonora (Wright). Tb. Kew. 
74, DIDYM/EA. 
Didymea, Hook. fil. in Benth. et Hook. Gen. Plant. ii. p. 150. 
One herbaceous species :— 
Y 1. Didymza mexicana, Hook. fil. in Hook. Ic. t. 1271. 
South Mexico, valley of Mexico (Schaffner, 177, 178; Bourgeau, 98), region of 
Orizaba at 10,000 feet (Liebmann, 255 ; Linden, 1403; Galeottt, 4405 ; Bourgeau, 3050). 
Hb. Kew. 
