no The Ottawa Naturalist. [July 



not definitely known in a wild state, ^ appears to have enjoyed a 

 world-wide distribution includinj^ all continents and extending- 

 from California to India, from Greenland to Arg-entina, and from 

 Tasmania to Spitzberjj^en. 

 bmithsonian Institution, Washinofton, 2 May, iqoi. 



Plate V'll. — Canadian types. 

 Figures i and z. — Whii/lcstyn dcsiderala, D. W'., F'ig'. \a, cnlarg-enient (X4) lo 



show the vascular bands of tiie leaf. 



Harrinj^ton River, N. S. ; Riversdale formation. 

 Figure 3. — Whifflcseva hrcvifoUti, D.\\'., Fig-. \a, detail show ing^ the nervation 



(X4) .'.'_,." ^ 



Harrington River, N. S. ; Riversd.ile formation, 

 figure 4. — W'/iiftleseya Da7vsuniLi?ia, D. W., Fig. 4<f, enlargement (X4) to show 



the vascular bands. 



St, John, X. B. ; Lancaster formation. 

 -Appalachian t\pes. 

 Figure 5. — W/i it/Irxcvd clegaiis, Xewb. , showing the average form and 



proportions. 



Roof of Sharon coal, Akron, Ohio; upper part of Pottsville. 

 Figure 6. — Wliiftlcseya itndulatn, Lx., slightly narrower than the normal form 



hibelled by Lcsquereux with this name. 



Roof of I'ratt coal, l^olomite, Ala. ; Pratt group, Upper Pottsville. 

 Figure 7. — Whi/tlcstya uiicmphylla, Lx. 



Near Fayette»ille, Ark. ; Coal-bearing shale, Upper I'ottsville. 

 Figure 8. — Whittlescya Campbelli, D. \\\ 



Lincoln Mines, Southern Anthracite field. Pa. ; 



Lower Lykens division, Pottsville. 



SOME NEW CANADIAN GENTIANS.- 



By Theo. Holm. 



Gentiana macounii. — Annual or sometimes biennial, g-jabrous 

 except the calyx : stem strict, quadranj^ular, 5 to 30 cm. high, 

 branched from the base : lowest leaves spathulate or oblong- lanceo 

 late, the upper linear-lanceolate, acute : peduncles long- and stout, 

 I -flowered : calyx purplish-green, uneciually cleft to near the 

 middle, 4-lobed, the longer lobes lanceolate, the shorter ovate with 

 broad membranaceous margins, all acuminate and carinate, 

 scaberulous with minute short papilhe, especially along the keels : 

 corolla deep bluish, 1 1^ to 3 cm. long, cleft to about / .; of its 

 length, 4-lobed, the lobes very veiny, slightly spreading, broad and 



1 The sole survivor of the genus Ginkgo, the Ginkgo tree (G. biloba), also 

 known as the " Maidenhair tree" on account of the resemblance of its leaves 

 to the Maidenhair fern (Aditn///////), is the sacred tree of the temple gardens 

 of Japan and China, whence it has been introduced by horticulturists into 

 Europe and America. 



- These descriptions of new species, formerly supposed to represent 

 Gentiana serrata, Gunn., have been extracted from a very valuable paper 

 by Mr. Holm on " Some Canadian species of Gentiana : section Crossopetalce, 

 Frtel.", with four plates, received too late foi- publication in this number of 

 Thp: Ottawa Naturalist. The complete paper will ajipear in an early 

 nimiber of this journal. 



Mr. Holm also proposes G. serrata, var. grandis, and var. ludopetala. Gray, 

 as species, viz.: G. grandis (Gray Synopt. Flora, p. 117), Holm, and G. holo- 

 petala (Gray ibid.). Holm.— Editor. 



