913.7 C280 v.2 Lundell, Cyrus Longworth, ... Preliminary sketch of the phytogeography of the Yucatan penninsula, by Cirus Longworth Lundell. With one text figure. Appendix. The grasses of the Yucatan penninsula, by Jason R. Swallen. With seven text-figures. (Issued October 1934) In Carnegie Institution of Washington. 29x 23 cm.