ICfJ JOURNAL OF THE ARNOLD ARBORETUM |vol. ii 



Byrsonima lucida De Candolle, Trodr. i. 530 (1824). — Malp'ujhia 

 lucida Miller, Diet. ed. 8, No. 9 (17C8). — Swarlz, Trodr. 74 (1788). 

 Malpighia cuncata Turcziininow in Bull. Soc. Nat. Mosc. xxxi. pt. i. 390 

 {\^od,). — Byrsonima cuncaia P. Wilson in Bull. N. Y. Bot. Gard. viii. 

 391 (1917). — Britten & Millspaugli, Bahama Fl. 205 (1920). 



The recent change in the nanxe of this phmt a])pears to be due to the 

 fact that a curious error made by IVIillcr had been overlooked. The 

 technical descrii)tion of his Malpighia (lucida) No. 9 clearly refers to our 

 Florida plant, but in his notes on the different species Miller transposed 

 his Nos. 8 and 9, describing under his "eighth sort" No. 9, Maljnghia 

 lucida, and under his "ninth sort," No. 8, Malpighia ilUciJolia. As the 

 species is based on the technicid descri])tion and not on the notes there 

 seems to be no reason for changing Byrsonima lucida DC. to Byrsonima 

 cuncata P. Wilson. 



Cyrilla racemiflora var. parvifolia, n. var. — Cyrilla parrifoliaSliulll. 

 apud Small in Bull. Torrcy Bot. Club, xxiii. 101 (189G). 



This shrub from the west Florida coast differs from C. racemiflora L. in 

 its smaller size, smaller leaves and shorter racemes, and affords no mor])ho- 

 ogical characters by which it can be distinguished specifically from that 

 si)ecies. The fruit which has been described as globose Is ovoid on the 

 specimens which I have seen. 



Acer glabrum f. trisectum, n. nom. — Acer glahrum var. tripartihim Pax 

 in Engler Bot. Jahrb. vii. 218 (188G), not Acer tripartitum Nuttall in 

 Torrcy & Gray, Fl. N. Am. i. 247 (l838); andN. Am. Sylva, ii. 85 (184G). 



This new name is suggested for the form of Acer glahrum Torrey with 

 3-i)artcd or 3-folIolute leaves, as the name tripartitum which has been 

 used for this form of Acer glabrum belongs to a little alpine species which 

 Nuttall foutul in "the Rocky Mountain Range in about latitude 40 

 within the line of Upper California." This species differs from /leer (//rt- 

 brum In Ihe snudl 3-lobed leaves which are not niore than 2.5 3 cm. in 

 diameter and which so far as I have seen them are never 3-foliolate, in 

 the smaller flowers, fruit with the wing not more than I cm. long, and in 

 the pale gray not red-brown young branchlcts. 



Tlie specimens In this herbarium are from the Big Horn Mountains 

 of Wyoming and from those of Utali and Nevada. 



Acer nigrum var. Palmeri, nov. var. 



Differing from the type in the 3-lobed leaves with broad long-acumi- 

 nate nearly entire terminal lobes and in their rounded or slightly cordate 

 base. 



Iluxois. Jolinson County, Tunnel Hill in a single grove, E. J. Palmer 

 (No. 15177), May 17, 1919, (No. 1GG7S and No. 1GG79 type), October 4, 1919. 



Indiana. Lawrence County, C. C. Dcam (No. 17299), July 13, 1915. 

 Putnam County, C. C. Dcam (No. 17574), July IS, 1915. Shelby County, 

 C. C. Dcam (No. 30258), September 27, 1919. 



Missouri. Jackson County, Athcrton, B. F. Bush (No. 17G4), August, 1 

 1902. Clark County, Wayland, B. F. Bush (No. G25), August 21, 1911. 

 Dunklin County, C:unp])ell, C. S. Sargent, October 3, 1910. 



