40) PODOSTEMACEZ. 
1. Oserya coulteriana, Tul. in Ann. Sc. Nat. série 8, xi. p. 106; Monogr. 
p. 155, t. 10. fig. 2 
SoutH Mexico, San Blas to Guadalaxara (Coulter, 1394). Hb. Kew. 
4, POTAMOBRYON. 
Potamobryon, Liebm. in Forhandl. Skand. Naturf. Kidbenh. 1849, p. 512. 
This genus is not taken up in Bentham and Hooker’s ‘Genera Plantarum ;’ and both 
Weddell and Tulasne overlooked it. Liebmann describes it as monandrous, with a 
perianth of four scale-like leaves and an unequally two-valved capsule. 
1. Potamobryon concinnum, Liebm. in Forhandl. Skand. Naturf. Kidbenh. 
1849, p. 5138. 
South Mexico, Maloapam, Vera Cruz (Liebmann). 
2. Potamobryon laxum, Liebm. in Forhandl. Skand. Naturf. Kidbenh. 1849, 
p. 014. 
Souro Mexico, near Paso de Ovejas, Vera Cruz (Liebmann). 
3. Potamobryon patulum, Liebm. in Forhandl. Skand. Natur. Kidbenh. 1849, 
p- 515. 
SoutH Mexico, Barranca de San Francisco, near Mirador, Vera Cruz (Liebmann). 
Series III. MULTIOVULATZ TERRESTRES. 
Order CXIV. CYTINACE. 
Cytinacee, Benth. et Hook. Gen. Plant. iii. p. 116. 
Fleshy parasitical herbs, sometimes reduced to a single flower sessile on a branch or 
root of the nurse-plant. About twenty-two species are known—and they are referred 
to seven genera. They inhabit the south of Europe, Africa, America, and Trepical 
Asia, 
1, CYTINUS. 
Cytinus, Linn. Gen. Plant. n. 1232; Benth. et Hook. Gen. Plant. iii. p. 118. 
Root-parasites. Four species are known—one in the Mediterranean region, one in 
South Africa, and two in Mexico. 
1. Cytinus americanus, R. Br. in Trans. Linn. Soc. xix. p. 246; Hook. f. in 
DC. Predr. xvii. p. 108 (quoad plantam Barclayanam tantum); A. Gr. in Proc. Am. 
Acad. v. p. 188. 
Scytanthus bambusarum, Liebm. in Forhandl. Skand. Naturf. Kidbenh. 1847, p. 183. 
Bdallophytum ceratantherum, Fichl. in Bot. Zeit. 1872, p. 715, t. 8 A. figg. 1-5 (male-perianthium 
vere 7—9-partitum). 
South Mexico, Papantla (Liebmann), without locality (Barclay), Wartenberg, 
Tantoyuca (ELrvendberg). Hb. Kew. 
