STANDLEY TEEES AND SHRUBS OF MEXICO. 243 



Plants fruticose only at the base, the branches slender ; leaves linear to spatu- 

 late 1. H. macroptera. 



Plants woody almost throughout, the branches very stout ; leaves broadly spatu- 

 late 2. H. fruticosa. 



1. Harfordia macroptera (Benth.) Greene & Parry, Proc. Davenport Acad. 5: 



28. ISSS. 

 Pterostegia macroptera Benth. Bot. Voy. Sulph. 44. 1844. 

 Pterostegia galioides Greene, Bull. Calif. Acad. 4: 213. 1885. 

 Baja California. 



2. Harfordia fruticosa Greene; Parry, Proc. Davenport Acad. 5: 28. 1888. 

 Pterostegia fruticosa Greene, Bull. Calif. Acad. Sci. 4: 212. 1885. 

 Known only from Cedros Island, Baja California. 



Densely branched shrub, 0.6 to 1 meter high. 

 I'erhaps not specifically different from the preceding. 



3. MUHLENBECKIA Meisn. Gen. PI. 1: 316. 1840. 



MuhlenMeckia platyclada Meisn., a curious plant with long flat ribbon-like 

 leafless stems, a native of the Solomon Islands, is sometimes cultivated. Seler 

 reports tliat it grows upon trees in Veracruz, where it is perhaps naturalized. 



1. Muhlenbeckia tamnifolia (H. B. K.) Meisn. Gen. PL 2: 227. 1840. 



Polygonum tamnifolium H. B. K. Nov. Gen. & Sp. 2: 180. 1817. 



Polygonum quadrangulatum Mart. & Gal. Bull. Acad. Brux. 10^: 353. 1843. 



Veracruz to Morelos. Central America to Chile ; type from Colombia. 



Scandent or trailing shrub with brown stems ; leaves oblong or ovate, cordate 

 at base, acuminate ; flowers very small, greenish, glomerate-spicate. 



4. COCCOLOBA L. Syst. Nat. ed. 10. 1007. 1759. 



Reference: Lindau, Bot. Jahrb. Engler 13: 106-229. 1890. 



Trees or shrubs ; flowers small and inconspicuous, perfect, fascicled within 

 small bracts, the fascicles spicate; perianth often very fleshy in fruit. 



Ramirez reports the vernacular name " toto " for a Tabasco species of doubt- 

 ful determination. 



Perianth lobes accrescent and inclosing the fruit. Leaf blades obovate or oval, 



glabrous 1. C. floribunda. 



Perianth tube accrescent and inclosing the fruit. 

 Leaves more or less pubescent beneath, sometimes pubescent also on the 

 upper surface. 

 Leaf blades mostly orbicular or nearly so, about as broad as long. 



Leaves minutely puberulent beneath 2. C. uvifera. 



Leaves short-pilose beneath. 



Leaf blades 12 to 50 cm. long, pilose on the upper surface. 



3. C. grandifolia. 

 Leaf blades 5 to 8 cm. long, glabrous on the upi^r surface. 



7. C. goldmanii. 

 Leaf blades about twice as long as broad or longer. 

 Rachis of the inflorescence glabrous or very minutely puberulent. 



4. C. lapathifolia. 

 Rachis of the inflorescence densely short-pilose. 

 Leaf blades obtuse-acuminate, 12 to 18 cm. long, 5 to 7 cm. wide. 



5. C. lindeniana. 

 Leaf blades rounded at the apex, 6 to 13 cm. long, 2.5 to 7 cm. wide. 



6. C. liebmanni. 



