l6 BLAKE: REVISION OF THE AVOCADOS 



to 4.5 cm. long; panicles pyramidate, shorter than the leaves, ochraceo- 

 villous; pedicels i to 3 mm. long; perianth villous, 5 mm. long, the seg- 

 ments equal, narrowly ovate, acute; filaments '/s longer than the 

 anthers, densely long-pilose, those of series III bearing at base two 

 large sub-globose acute glands; staminodes foliaceous-triangular, not 

 barbellate at apex, the head slightly longer than the densely long- 

 pilose stipe; ovars' densely pilose, ellipsoid, about equal to style; fruit 

 unknown. 

 Type Local,ity: Chinantla, Puebla, Mexico. 



This species, based on Liehmann 85, does not seem to have been col- 

 lected again. It is said to bear the name "aguacate cimaron." No 

 material has been seen by the writer, and the above description is trans- 

 lated from Mez's original. 



3. Persea schiedeana Nees, Syst. Laur. 130. 1836. Coyo. 



Persea gratissima schiedeana Meissn.; DC. Prodr. 15^: 53. 1864. 



Persea pittieri Mez, Bot. Jahrb. 30: Beibl. 67: 15. 1901. 



Tree 15 to 20 meters high, rarely to 50 meters; branchlets stout, 

 densely ferruginous-tomentose, glabrescent; leaf blades 12.5 to 30 cm. 

 long, 7 to 15 cm. wide, obovate or elliptic-obovate to oval-obovate or 

 sometimes oval, at apex abruptly short-pointed, obtuse, broadly rounded, 

 or even subtruncate, at base broadly rounded, cuneate-rounded, or 

 subcordate, feather-veined (lateral veins 11 to 13 pairs) and rather 

 loosely prominulous-reticulate beneath, above deep green, in youth 

 densely ferruginous-tomentose, in age glabrate or merely tomentose 

 along costa and sometimes along chief veins, beneath glaucous, along 

 veins and veinlets or over whole surface densely pilosulous with loose 

 spreading sordid-griseous hairs; petioles stout, densely sordid or ferru- 

 ginous-tomentose, at length glabrescent, 1.5 to 4.5 cm. long; panicles 

 densely griseous-tomentulose, nearly equaling the unfolding leaves, 

 10 to 12 cm. long (including the 4.5 to 6.5 cm. long peduncle) ; pedicels 

 8 to 15 mm. long; perianth 6 to 8 mm. long, densely griseous-tomentulose 

 both sides; tube obsolete; segments subequal, lance-elliptic, gradually 

 narrowed to an acutish tip, 2.5 to 2.8 mm. wide; stamens of series I 

 3.2 to 3.5 mm. long, the rather slender densely pilose filaments 2 to 

 2.2 mm. long, the anther 1.3 mm. long; of series II similar, 4 mm. long, 

 those of series III similar, 3.6 mm. long, the densely pilose filaments 

 bearing essentially at the base two ovate obtuse pilose glands on pilose 

 stipes of about the same length to twice as long; staminodes 1.3 to 

 1.9 mm. long, pilose, the stipes subulate, twice to thrice as long and 

 essentially as broad as the elliptic obtuse head; ovary densely pilose, 

 twice as large as in P. americana; style pilose, two-thirds as long as the 

 ovary. 



Type Locality : Misantla, Vera Cruz, Mexico. 

 Specimens Examined: 



Mexico: Zacuapan, Vera Cruz, March, 1914, Purpus 7074. Tree 

 in forest, probably indigenous, Dos Rios, near Santa Lucrecia, Vera 



