422 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
OYEDAEA OvaTA (Gardn.) Benth.; Baker in Mart. Fl. Bras. 6%: 207. 1884. 
Serpaea ovata Gardn. Lond. Journ. Bot. 7: 296, 1848. 
Gardner’s Serpaea ovata is identical? with the earlier, long problematical Dimero- 
stemma brasilianum Cass. 
OYEDAEA ROTUNDIFOLIA Baker in Mart. Fl. Bras. 6*: 208. 1884. 
Serpaea rotundifolia Schultz Bip.; Baker in Mart. Fl. Bras. 6*: 208. 1884, assynonym. 
This plant is properly known as Dimerostemma rotundifolium (Baker) Blake.“ 
OYEDAEA SEEMANNUI (Schultz Bip.) A. Gray, Proc. Amer. Acad. 19: 10. 1883. 
Viguiera seemannii Schultz Bip.; Seem. Bot. Voy. Herald 305. 1856-57. 
Dr. Gray’s reference of this species to Oyedaca was an error, due to the fact that 
achenes belonging to this genus had become mixed with the type material in the 
pocket of the sheet in the Gray Herbarium.!§ 
The plantis properly known as Vigwiera seemannii Schultz Bip., and is still known 
only from the original collection by Seemann (no. 2005) in the Sierra Madre of north- 
western Mexico. 
OYEDAEA VestITA Baker in Mart. Fl. Bras. 6°: 207. 1884, 
This is Dimerostemma vestitum (Baker) Blake.' 
2 See Blake, Contr. Gray Herb. n. ser. 52: 15. 1917. 
3 Bull. Soc. Philom. 1818: 58. 1818. 
M4 Contr. Gray Herb. n. ser. 52: 13. 1917. 
18 See Blake, Contr. Gray Herb. n. ser. 54: 78. 1918. 
16 Contr. Gray Herb. n. ser. 52: 11. 1917. 
