No abstract

Sir: In lieu of a simple list of the plants obtained in Colorado during tlxe explorations of last summer, I have the honor to present you herewith a condensed Synopsis of the Flora of the Territory, prex)ared in con-'A, Zafliyrufi/^( ninth line from bottom^) jiut^'A Lafhj/rus." *ElBES FLORIDUM, L'ller./' put "RlBES FLORIDUM, L."' (E.NuttalUi, T. & G.," (sixth line from top,) put '' (E, KuttalliijToTT:' ' O. hrcvistijla,^^(eighth line from top,) put '• O. hrevlHbjllsP 'SOUDAGO L.VXCEOLATA5 T, & G./' put "SOLIDAGO LAXCEOLATA, L." 'HELiorsis LAEYis, Pursh," put "HELiorsis LAEVis, Pers." 'MiMULus FLORinrxnus, Gr./'pnt *'Mimclus floribuxditS, Dough" 'DC. Prod. 10, p. 1, 331," (sixth lino from bottom^) put "DC. Prod. 10, p. 331." ' ACERTES DECUMBEXS," put^* ACEKATES BECCMBENS." . Dumont," after Suxda m^vhitima^put^*Dumort." SUEniERDLV C.VNADEXSIS, L.," put "SllEPUERDIA CaXADEXSIS, Nutt." ' IIUMULUS LUPULUS," put "H. LUPULUS.'T ixus aristata, Eugelm, DC. Prod., L c, p. 400," put "Pxxus Balfouriax-a, Murr., (P. aristataj Engclm.") *MoxTAXUS," (third line from the top,) put "MOXTaxcs." ' var. MixoR, Olney," put^'var MIXOR, Boott," Orthotrichum IlATxir, Sully. & Les^ix.," put^' O. HAI.LII Lesqx.'Ŝ 'ar. S. alpinum/^(ninth line from top,) put "var. J. alinnum." 'EXGYRnvM," (first line at top,) put "eugyrium." CTEIDIUM," (thirteenth line from bottom,) put " CTEIxidium." 'EXDOCOCEUS/' put " EXDOCOCCUS." 'AgaRICUS LACCATUS, Scap.," put A. LACCATCS, Scop.'' 'LeXZITES SEPIRIA," put "L. SEPIARIA." *PUCCIXIA PORTERl/' put "P. POKTERI.'P ec.," after Peziza ao-ecaxalts^p ut "Peck.'' SYNOPSIS OF THE FLORA OF COLORADO. * Clemati?^DoU(;l.ASII, Hook. Stem Ksiinple, erect, 10-2^I ngli, l-flowered, sparingly liaiiyj^voolly at the jointsj leaves liaiiy, 2-3 pinnatilid; sepals tliick, deep pnr[)le within, paler externally, spreading at 4 SYNOPSIS OF THE FLOEA OF COLORADO. J^c eediii j; 1' in diameter ; petals flal^eHiform, twice exceeding the sub-villous ovalvsepalsj basilar scale small, adnate ; achenia crowded in an oval head, sraootli. tnrgid ; beak rather long, ensiform, scarions-winged on each side.-In the high alpine region, close to the snow. Ball & Harbour, 17 ; Furry. Chicago Lakes at 12,000 feet altitude, June, Coulter. Gray's Peak, 13,000 feet, Bedjield, Eanukculus REPENS, L. ; petals 12-18, spatulate, retuse J stamens very numerous; anthers truncate, appendiculate at the apex, equaling or shorter than the at-length recurved filaments; stigmatic rays of the striate, urceolate ovary 13-21, almost reaching the crenate margin of the umbilicate disk, neither constricted nor beaked toward the apex.-Leaves longer in proportion to their breadth than those of y. adveua;^inus narrower and more closed; flowers very large ; outer sepals greenish and yellowish, inner ones more or less tinged with r red. -^I VIountain -lakes around Long's Peak, Parry, Cold Lake in the SieiTa Madre Eange, at 10,000 feet altitude, Coulter.

It should be realized that, in so complex a subject as heredity, increasing experimental work. must greatly increase the range of known facts and make explanations increasingly difficult.

Torreya taxijolia Arnott' occurs in a narrow belt along the eastern side of the Apalachicola River, extending from the southern boundary of Georgia for about thirty miles southward (i). In April I904 this region was visited by H. C. COWLES of this laboratory, among whose notes the following are of interest in this connection: My visit was to the northernmost colony, west of Chattahoochee village, and close to the Georgia line. The distribution lines on CHAPMAN'S map (i) would lead one to suppose that the tree is xerophytic and frequents the steep and dry eastern bluffs. I was much surprised to find that it was confined (in the Chattahoochee station at least) to the extremely mesophytic slopes of ravines, growing exclusively in the shade of trees, and in places that are continually moist, preferably on slopes facing north. The northern and southern known limits of the tree are only about thirty miles apart, and the east-west range is much less. Furthermore, on account of the great economic value of the wood, and the familiarity of the tree to all the inhabitants of the region, the likelihood of finding other areas is very slight. It is associated with a remarkable and somewhat extensive group of northern mesophytic plants, and the conclusion is irresistible that Torreya is a northern plant of the most pronounced mesophytic tendencies, and to be associated with I Unfortunately, Torreya was used at least three times as a generic name, in as many families, before i838, the date of the publication of Torreya Arnott. Hence ARNOTT'S genus has been replaced by Tumion Raf., and our species becomes Tumion taxifolia Greene. In the present paper, however, the more familiar name is used for onvenience. i6i

Anthoceros gametophyte and sporophyte. 5. Porella branches bearing sex-organs and sporophytes. 6. Moss, showing sex-organs and capsule. 7. Pteris or a similar fern, showing leaf, rhizome, sporangia, gametophytes with sex-organs, and young sporophytes. 8. Marsilia or Selaginella, showing structures of male and female gametophytes. 9. Pine, showing wood, needle-leaf, microsporangia, megasporangia, with gametophytes, and young sporophytes. 10. Trillium leaf, root (or onion root), stem, microsporangia, and megasporangia. 11. Ranunculus, microsporangia megasporangia, and stem. Rumex will serve as well. student will be greatly helped. Some of them for text use are essential to success in the work.