205 



Sj) eci m en s exam i n ed — 

 Eastern Texas : 



Near Austin, K. Hall (No. 069), 1872. 



Near Industry, H. Wurzlow, 1895, 1896, 1897. 



The type of this species is Mr. Wiirzlow'e 1895 plant deposited in the National 

 Herbarium. 



Specimens have been grown in Washington since 1895. 

 Tiadescantia gigantea Rose, sp. now 



Plants growing in clumps; steins stout, thick, upright, glabrous and glaucous 

 below, 6 to 10.5 dm. high, more or less branching, tho branches slender and erect; 

 leaves large, oblong-linear, 3 dm. or so long, 12 to 36 mm. wide, dark green above, 

 pale green and glaucous beneath, glabrous except the margin; sheath glabrous; 

 top of stem and base of involucral leaves covered with a short, dense, almost velvety 

 pubescence; involucral leaves 2 or 3, short, tbeir bases much enlarged ; flowers very 

 numerous, 50 or more; pedicels soft-pubescent, not glandular, 30 to 10 mm. long; 

 sepals boat-shaped, 10 mm. long, acute, pubescent, but not glandular; petals blue or 

 pink, with white form ; ovary pubescent, but not glandular. 



Specimens sent by Otto Locke, New Braunfels, Tex., April 11, 1897. Also by 

 P. G. Schaupp, Shovel Mount, Burnet County, Tex., April 21, 1897. These speci- 

 mens are unlike any others which we have seen. 



This is an extremely large, coarse plant. It is a very abundant bloomer, produc- 

 ing immense clusters of flowers. It is readily recognized by its almost velvety 

 peduncles, pedicels, and sepals. 



Tiadescantia scopulorum Rose, sp. nov. 



Stems rather low and very slender, 4 dm. or less high, more or less branching, 

 pale and glaucous, mostly glabrous throughout; radical leaves numerous, linear, 

 generally erect, stem leaves similar, very narrow (2 to 10 mm. wide); sheath very 

 short and turgid; involucral leaves filiform, somewhat unequal, much shorter than 

 the leaves; umbels sessile, rather numerous, terminating stem and branches; pedi- 

 cels slender; sepals narrower; petals very pale blue, acute. 



Arizona to Texas, north through Colorado to Montana, perhaps extendiug into 

 western Nebraska. The type of this species is the plant found by Mr. Pringle in 

 the Santa Catalina Mountains, Arizona. Its range is not well defined, but I have 

 assigned to it all those forms which have been referred to T. virginiana from western 

 Texas, Arizona, New Mexico, Utah, Colorado, Montana, and western Nebraska. 

 Specimens sent me by Mr. George Ostorhout from western Colorado are very puhes- 

 cent in the umbel, but in other respects like the type. 



This species has generally been referred to T. virginiana with doubt, or mentioned 

 as the "narrow- leaved western variety/' and so far as I can learn no name has been 

 assigned to it. It appears to be quite distinct from typical T. virginiana, and can 

 he identified at a glance by one familiar with the genus. It is not easy, however, to 

 express these differences, and on this account some of my statements above may 

 need revision. Briefly, it differs from true T. virginiana in its slender branching 

 habit, slender and glaucous leaves, and numerous flowering nmbels, as well as in its 

 very distinct range. 



Specimen* examined — 

 Arizona: 



By streams of tho Santa Catalina Mountains, V. G. Pringle, May 16, 1881 

 (type). 



Flag Staff, D. T.McDougal, July, 1891. 



Pinal Mountains, J. W. Tourney, July 20, 1892 (No. 439). 



, Dr. E. Palmer, 18G9. 



Oak Creek, H. H. Iinsby, June, 1883. 



Holbrook, Mrs. Myrtle Zuck Hough, August 22, 1896. 



Snow-flake, Mrs. Myrtle Zuck Hough, August 7, 1897. 



