STANDLEY — TREES AND SHRUBS OF MEXICO. 77 



Trunk short or almost none; rachis of the leaf 80 to 85 cm. long, with 6 

 pairs of pinnae, these 50 to 65 cm. long; inflorescence 1.2 to 1.5 meters long. 

 " Guanito talis." 



Leaves used for covering huts. 



11. REINHARDTIA Liebm. ; Mart. Hist. Nat. Palm. 3: 311. 1836-50. 

 1. Reinhardtia eleg'ans Liebm.; Mnrt. Hist. Nat. Palm. 3: 311. 1836-50. 



Oaxaca ; type collected between Chuapan and Tiutalcingo. 



Trunk slender, 6 meters high ; leaves 1.5 to 1.8 meters long, horizontal, the 

 pinnae 30 to 45 cm. long, 1.2 cm. wide; inflorescence erect, a meter long, 

 branched ; fruit oval, about 1.5 cm. long. 



12. CHAMAEDOREA Willd. Sp. PI. 4^ 638. 1806. 

 Plants unarmed, erect or procumbent, with stout or very slender stems ; 

 leaves pinnatisect, or simple and bifid at the apex; fruit small, of 1 to 3 

 carpels, dry or fleshy. 



The Mexican species of this genus, as of most others o^ the family, are very 

 imperfectly known. Some of them were described from cultivated plants, and 

 all are poorly represented in herbaria. The following key, consequently, is 

 very imperfect. 



The unopened flower spathes of various species are often cooked and eaten. 

 The following vernacular names are reported for some of the species : " Tepe- 

 jilote" or " tepexilotl (Nahuatl; Oaxaca, Morelos, Guerrero); "bom 

 cabalsah " (Oaxaca, Veracruz, Ramirez) ; " guaya de bajo," " guaya de cerro," 

 " guay ita " ( Tabasco ) . 



Interior perianth of the staminate flowers usually not stipitate ; anthers 

 obliquely incumbent. 



Caudex repent, short, dichotomous ; pinnae linear 1. C. niartiana. 



Caudex erect, elongate, simple ; pinnae lanceolate. 



Pinnae few, about 8 on each side 2. C. alternans. 



Pinnae numerous, 18 or more on each side. 



Segments of the inner perianth acutish ; branches of the staminate inflor- 

 escence few 3. C. tepejilote. 



Segments of the inner perianth very obtuse; branches of the staminate 



inflorescence numerous 4. C. wendlandiana. 



Interior perianth of the staminate flowers connate at the base with the fila- 

 ments and rudimentary ovary to form a short stipe ; anthers erect. 

 Perianth segments of both staminate and pistillate flowers valvate. 

 Interior perianth of the pistillate flowers of 3 distinct segments. 

 Leaves simple, bilobate or irregularly pinnatifid ; pistillate spadix simple. 



5. C. ernesti-augusti. 



Leaves pinnate; pistillate spadix branched 6. C. sartorii. 



Interior perianth of both staminate and pistillate flowers gamophyllous, 

 tridentate. 



Leaves simple, bifid 7. C. stolonifera. 



Leaves pinnate. 



Caudex very short or obsolete 8. C. humilis. 



Caudex 2 to 3.5 meters high. 



Pinnae 1 to .1.5 cm. wide, about 15 cm. long 9. C. elegans. 



Pinnse about 2.5 cm. wide and. 30 cm. long 10. C. liebmanni. 



Perianth segments of the staminate flowers valvate, those of the pistillate 

 flowers imbricate. 

 Fruit 3-celled. Pistillate spadices simple. 



