STANDLEY — TREES AND SHRUBS OF MEXICO. 87 



6. Philodendron mexicanum Engl, in Mart. Fl. Bras. 3': 143. 1878. 

 Valley of Cordoba, Veracruz. 



Leaf blades elongate-hastate, 30 to 36 cm. long. 



7. Philodendron subovatum Schott, Oesterr. Bot. Wochenbl. 1855: 289. 1855. 

 Southern Mexico, the locality not indicated. 



Stems scandent ; leaf blades cordate-ovate, 25 to 35 cm. long, 24 to 30 cm. 

 wide. 



8. Philodendron advena Schott, Oesterr. Bot. Wochenbl. 1855: 289. 1855. 

 Southern Mexico, the locality not indicated. 



Stems scandent; leaf blades broadly cordate-ovate, 35 cm. long, 20 to 26 cm. 

 wide ; spathes green outside, purple within ; berries stramineous. 



9. Philodendron anisotomum Schott, Oesterr. Bot. Zeitschr. 1858: 179. 1858. 

 Philodendron affine Hemsl. Diag. PI. Mex. 37. 1878. 



Morelos to Chiapas. Guatemala. 



Stems repent or scandent, rooting at the nodes ; leaf blades 3-parted. 



10. Philodendron fenzlii Engl, in Mart. Fl. Bras. 3 ': 144. 1878. 

 Morelos and probably elsewhere in Mexico. 



Caudex scandent, 1 to 1.2 cm. thick ; leaves 3-parted. 



11. Philodendron radiatum Schott, Oesterr. Bot. Wochenbl. 3: 378. 1853. 

 Forests of Veracruz and Oaxaca. Guatemala. 



Stems stout, scandent; leaf blades deeply pinnatifid; spathes green or pur- 

 plish outside, pale purple within. 



12. Philodendron polytomum Schott, Bonplandia 7: 164. 1859. 

 Forests of Veracruz ; type from Colipa. 



Leaf blades deeply pinnatifid, 60 to 70 cm. long, 60 to 65 cm. wide. 



3. SYNGONIUM Schott, Wien. Zeitschr. 3: 780. 1829. 

 Scandent shrubs, the stems rooting at the nodes ; leaves petiolate, the primary 

 ones sagittate, the adult ones 3 to 9-lobate, the petiole elongate, with an 

 accrescent persistent sheath ; flowers monoecious, the peduncles short, solitary 

 or fasciculate, the spadix much shorter than the spathe. 

 Tube of the spathe narrowly cylindric ; lateral nerves of the leaves ascending 



at an angle of about 60° 1. S. auritum. 



Tube of the spathe oblong-ovoid ; lateral nerves ascending at an angle of 30 

 to 45° 2. S. podophyllum. 



1. Syngonium auritum (L.) Schott; Schotl & Endl. Melet. Bot. 1: 19. 1832. 

 Arum auritum L. Sp. PI. ed. 2. 1371. 1763. 



Syngonium neglectum Schott, Bonplandia 1859: 163. 1859. 

 Veracruz to Morelos. Jamaica. 



2. Syngonium podophyllum Schott, Prodr. Syst. Aroid. 68. 1856. 

 Veracruz. El Salvador. 



10. LILIACEAE. Lily Family.^ 



The Mexican species treated here are trees or shrubs, sometimes acaulescent 

 but often with thick, simple or branched trunks; the leaves are either linear or 

 dagger-shaped, usually stiff and rigid, sometimes with spiny margins; the 

 flowers are either small or large and showy. 



^The writer is under obligations to Dr. William Trelease for generous assist- 

 ance in the preparation of the account of this family. 



