Macbride — Various American Spermatophytes 53 
a difference apparently overlooked by Rydberg. The style of D. 
densifolia is slender and, as Nuttall described it, about one-third 
the length of the pod, or 1.5-2 mm. long. But the style of D. 
Paysonii is uniformly stout and shorter, scarcely over 1 mm. in 
length. It appears, then, that D. Paysonii is quite distinct from 
D. densifolia. 
Machaerium Whitfordii, spec. nov., arbor circa 20 m. alta; 
ramulis glabris vel juventate parce fulvo-pubescentibus; inter- 
nodiis 1.5-2 cm. longis; stipulis non vel tarde deciduis; petiolo 
communi 9-15 em. longo subadpresse et dense fulvo-pubescente; 
foliolis Seetianiine: petiolulatis nunc alternis nune oppositis vulgo 
oblique oblongis vel rare ovato-oblongis plerisque 2 em. 
coe 7 mm. latis, rare 3 cm. Sy, gis me m. latis basi et apice rotun- 
leviter er meia rican “Teumine ad basin dense ad- 
presseque fulvo-pilosulo. — CoLom low hills bordering Negro 
river, Guaguaqui, Boyacé, July 4, “1917, H. N. Whitford & J. 
Pinzon , ho. 12 (type, Gray Herb.). 
This species belongs to # section Oblonga and is most closely 
related to M. Moritzianum Benth. and M. sordidum Benth. From 
the former it differs especially in the not at all retuse leaflets and 
the straight rather than curved base of the legume. From M. 
sordidum it may be distinguished at once by the short-stipe to the 
legume and the persistent stipules. The native name, according 
to the collectors is “ Negrillo”’ in reference to the usually black 
heart wood. 
Heurerra tonerrouata Britton, Ann. N.Y. Acad. Sc. vii. 69 
(1892). H. cuspidata (Engler) Chod. & Hass. Bull. Herb. Boiss. 
2d Ser. iv. 1285 (1904). Esenbeckia ? cuspidata Engler, Bot. 
Jahrb. xxi. Beibl. liv. 28 (1896). 
pedasy & Hassler, 1. c., have rightly indicated the identity of 
Engler’s and Britton’s sianite but have obviously violated rules 
of botanical nomenclature in taking up Engler’s much later pub- 
lished name. The three leaf-variations which they designate as 
‘forms ” appear to be so slight and superficial in nature as to be 
unworthy any formal recognition. 
