SILVA OF NORTH AMERICA. 99 
Rhamnus Caroliniana, ii. 35. The range of this species from Long Island, New York, should be emended 
to read from Virginia. The northern station was admitted on the authority of the Catalogues of New York and of 
New Jersey Plants (Britton, Stearns & Poggenburg, Cat. Pl. N. ¥. 11 [1888]; Britton, Cat. Pl. WV. J. 76 
[1889] ; but it now appears that the Rhamnus of Long Island and New Jersey referred to this species is Rham- 
nus Frangula, Linneus, which has escaped from cultivation and become naturalized. (See Britton, Bull. Torrey 
Bot. Club, xxi. 184, 233. — Britton & Brown, Jil. Fi. ii. 406.) 
Rhamnus Purshiana, ii. 27. It was not in Siberia, but at Grossenhain in Saxony, that Frederick Pursh 
was born on February 4, 1774. (See C. A. Pursch, Mora, 1827, ii. 491.) 
Zisculus glabra, ii.55. Extend range westward to Pawnee, Richardson, and Nemaha counties, southeastern 
Nebraska (Bessey, Rep. Nebraska State Board Agric. 1899, 89), and to eastern Texas. 
The Texas form is, — 
Zisculus glabra. var. Buckleyi. 
isculus arguta, Buckley, Proc. Phil. Acad. 1860, 443 (not Zsculus Pavia, var. arguta, Lindley). — 
Britton & Brown, Jil. F7. ii. 401, £. 2383. 
isculus glabra, vax. arguta, Robinson, Gray Syn. Fl. N. Am. i. pt. i. 447 (1897). 
This variety, which ranges from Iowa to Kansas and eastern Texas, may be distinguished by its six to seven- 
foliolate leaves, with narrower lanceolate more acuminate and usually more sharply and generally doubly serrate 
leaflets than are usually found on #sculus glabra. It was first distinguished at Larissa, Cherokee County, Texas, 
by S. B. Buckley. 
Hypelate trifoliata, ii. 77. Add specific gravity of absolutely dry wood 0.9102; and weight per cubic 
foot 56.72 pounds. 
Acer glabrum, ii. 95. Extend range northwestward along the Pacific coast to the passes at the head of the 
Lynn Canal, Alaska, or nearly to latitude 60° north. This plant is not rare on the coast of southeastern Alaska, 
although probably it is always shrubby. (See Meehan, Proc. Phil. Acad. 1884, 81, as Acer rubrum ; see, also, 
F. Kurtz, Bot. Jahrb. xix. 369 [#1. Chileatgebietes].) Near Esquimo, Vancouver Island, on rocky sea cliffs 
this Maple grows to the height of forty feet and forms a trunk eighteen inches in diameter; and I have seen it 
of nearly the same size on the banks of streams among the Blue Mountains of Washington at an elevation of 
about four thousand feet above the sea. Extend range southward along the Sierra Nevada to the eastern fork of 
the Kaweah River, where in September, 1896, I found it as a bush five or six feet high at elevations of from eight 
thousand to nine thousand feet above the sea-level; and eastward to the elevated regions of Sioux and Scott’s Bluff 
counties, northwestern Nebraska. (See Bessey, Rep. Nebraska State Board Agric. 1899, 89.) 
Acer Negundo, ii. 111. “Iam not certain if this tree is native in Pennsylvania. Around Easton it is 
spread everywhere over fields from the seeds of trees planted along the streets of the city.” (T. C. Porter, in litt.) 
Cotinus Americanus, iii. 3. Extend range to southwestern Missouri where it is common on the bluffs and 
rocky banks of streams tributary to the White River, and was first found during the summer of 1897 by Professor 
William Trelease on Swan Creek in the neighborhood of Taney City. 
It is still common on the low limestone ridges about three miles east of Huntsville, Alabama. 
Rhus Metopium, iii. 13. This name was first published by Linnzus in 1759 in the tenth edition of the 
Systema (ii. 964). 
Rhus typhina, iii. 15. The Staghorn Sumach was described by Linnzeus in the first edition of the Species 
Plantarum under the name of Datisca hirta, and it appears only in one of his later works as Rhus typhina. 
According to the rules of nomenclature followed in this work the first Linnean specific name must be used and 
Rhus hirta, Sudworth, is therefore adopted for the Staghorn Sumach. The synonymy of this species as amended 
is as follows : — 
Rhus hirta, Sudworth, Bull. Torr. Bot. Club, xix. 81 (1892). — Britton & Brown, Jil. FT. ii. 386, £. 2848. — 
Britton, Wan. 600. 
Datisca hirta, Linneus, Spec. 1087 (1753). 
Rhus typhina, Linneus, Syst. ed. 10, ii. 963 (1759) ; Ameen. iv. 311. 
Towicodendron typhi O. Kuntze, Rev. Gren. i. 154 (1891). 
To this species were referred by Watson (Index), on what authority I do not know, and by some later authors, 
Rhus Canadense, Miller, Dict. ed. 8, No. 5 (1768), Rhus hypselodendron, Moench, Meth. 73 (1794), and Rhus 
viridiflorum, Nouveau Duhamel, ii. 163 (1808 ?). — Poiret, Lamarck Dict. vii. 504. 
To his Rhus typhina, B viridiflora, Engler, De Candolle Monog. Phaner. iv. 878 (1888), refers the Rhus 
viridiflora of Poiret. 
