38 CRUCIFERA, 
5. Erysimum sp.? (foribus atropurpureis). 
SoutH Mexico, Chiapas (Ghiesbreght, 817). Hb. Kew. 
| 12. SYNTHLIPSIS. 
Synthlipsis, A. Gray, Pl. Fendl. p. 116, in adnot.; Benth. et Hook. Gen. Plant. i. p. 93. 
The genus is at present limited to the species here enumerated. 
1. Synthlipsis berlandieri, A. Gray in Torr. Bot. Emory’s Exped. p. 34. 
NortH Mexico, Matamoras (Berlandier, 710, 778, 1517, 2127, 2198, 3017, 3102). 
Hb. Kew. 
2. Synthlipsis greggi, A. Gray, J. ¢. 
Norta Mexico, Saltillo, Coahuila (Gregg, Berlandier, 822, 2231, 2242), region of 
San Luis Potosi, 6000 to 7000 feet (Parry & Palmer, 18). Hb. Kew. 
18. GREGGIA. 
Greggia, A. Gray, Pl. Wright. i. p. 8, t. 1; Benth. et Hook. Gen. Plant. i. p. 80. 
G. camporum is the only species. 
1. Greggia camporum, A. Gray, Pl. Wright. i. p. 9, t. 1. 
Texas and New Mexico to—NortH Mexico, Chihuahua and west of Parras, Coahuila 
(Gregg), San Luis Potosi to San Antonio (Parry, 17). Hb. Kew. 
Tribe BRASSICEA. 
[Brassica sativa, Linn., Sinapis arvensis, Linn., and Hruca sativa, Lam., have been 
collected by Bourgeau and others; but they are introduced plants. | 
Tribe LEPIDINE. 
14. LEPIDIUM. 
Lepidium, Linn. Gen. Plant. n. 801; Benth. et Hook. Gen. Plant. i. p. 87. 
From sixty to eighty or more species, widely dispersed in temperate and warm 
regions; some are littoral in the South-Sea Islands. None are arctic or alpine. 
1. Lepidium alyssoides, A. Gray, Pl. Fendl. p. 10. 
CaLiFoRNia to—NortH Mexico, Santa-Cruz valley, Sonora (Thurber), San Luis Potosi 
to San Antonio (Parry, 20). Hb. Kew. 
2. Lepidium humboldtii, DC. Syst. ii. p. 532. 
Senebiera dubia, H. B. K. 
Soutn Mexico, at the foot of the Volcan de Orizaba (Humboldt & Benpland). 
3. Lepidium intermedium, A. Gray, Pl. Wright. ii. p. 15. | 
New Mexico, Trxas.—Norta Mexico, region of San Luis Potosi (Parry & Palmer, 
22). Hb. Kew. 
