86 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



4. Monstera karwinskyi Schott, Oesterr. Bot. Zeitschr. 9: 99. 1859. 



Monstera egrcyia Schott; Engl, in DC. Monogr. Phan. 2: 260. 1879. 



Fore.sts of Veracruz ; type collected between Collpa and Papantla. 



Stems high-climbing, 2 to 3 cm. thick ; leaf blades obliquely oblong, 40 to 50 

 cm. long. 



2. PHILODENDRON Schott ; Schott & Endl. Melet. Bot. 1 : 19. 1832. 

 Plants scandent, the leafy stems rooting at the nodes; leaves entire or 

 lobate, thick, with persistent sheaths ; flowers monoecious. 

 Leaves acute at the base, entire. 



Leaf sheath arising slightly below the blade, long-produced 1. P. seguine. 



Leaf sheath arising far below the blade 2. P. inaequilaterum. 



Leaves either sagittate or cordate or lobate. 

 Leaves parted or lobed. 

 Leaves 3-parted. 



Ovules several in each celll 9. P. anisotomum. 



Ovules solitary 10. P. fenzlii. 



Leaves incised or pinnatifid. 



Leaves ovate in outline 11. P. radiatum. 



Leaves rounded 12. P. polytom.um.. 



Leaves neither parted nor lobed. 

 Ovules solitary. 



Petiole terete 7. P. subovatum.. 



Petiole flattened above 8. P. advena. 



Ovules 2 to 5 in each cell. 



Leaves thin, usually pellucid-striolate 6. P. mexicanum. 



Leaves subcoriaceous, not pellucid-striolate. 



Petioles terete_ 5. P. sanguineum,. 



Petioles flattened or sulcate on the anterior side. 



Petioles flattened on the anterior side 3. P. sagittifolium. 



Petioles sulcate on the anterior side 4. P. daemonum. 



1. Philodendron seguine Schott, Bonplandia 1859: 164. 1859. 

 Forests of Oaxaca. , 



Branches 6 to 8 mm. thick ; leaf blades narrowly oblong, 15 to 20 cm. long, 

 4 to 4.5 cm. wide. 



2. Philodendron inaequilaterum Liebm. Nat. For. Kjobenhavn Vid. Medd. 



1850: 16. 1850. 

 Pital, Veracruz, the type locality. 

 Leaf blades oblong-ovate, 20 to 32 cm. long, 10 to 13 cm. wide. 



3. Philodendron sagittifolium Liebm. Nat. For. Kjobenhavn Vid. Medd. 1850: 



17. 1850. 

 Philodendron tanyphyllum Schott, Prodr. Syst. Aroid. 273. 1860. 

 Veracruz to Morelos. 



Stems high-climbing, 2.5 to 3 cm. thick; leaf blades sagittate, 30 to 50 cm. 

 long; spathe green outside, purplish within; berries dull yellow. 



4. Philodendron daemonum Liebm. Nat. For. Kjobenhavn Vid. Medd. 1850: 



17. 1850. 

 Veracruz, the type from Colipa. 

 Leaf blades cordate-hastate, 28 to 35 cm. long. 



5. Philodendron sanguineum Kegel, Gartenflora 1869: 197. pi. 621. 1869. 

 Forests of Veracruz, the type from the Valley of C6rdoba. 



Leaf blades elongate-sagittate, 20 to 30 cm. long ; spathes green, 13 to 15 cm. 

 long. 



