2«l> 



COMMELINACEAE 



Tradescantia 



50 



Map 592 



Commelina angustifolia Michx. 



~M 



Map 593 



Tradescantia cana Mculata Raf. 



Pubescence of pedicels and sepals non-glandular; plants of dry woodland, flower- 

 ing from the last of April to the first of June and usually soon dying down; 

 cymes mostly terminal, rarely both terminal and axillary; pedicels 1.5-4 

 cm long 3. T. virginiana. 



Pubescence of pedicels and sepals glandular. (See excluded species no. 126, 

 p. 1032. ) T. bracteata. 



1. Tradescantia canaliculata Raf. {Tradescantia reflexa Raf. of Gray, 

 Man., ed. 7 and Britton and Brown, Illus. Flora, ed. 2.) Glaucous Spider- 

 wort. Map 593. This species prefers the open and is generally found in 

 dry, sandy or gravelly soil, along roadsides, on sand hills and high banks 

 of lakes, and on the dunes. It is rarely found in swampy places but is 

 frequent in moist, prairie habitats. This is a rank growing species with 

 several color forms which have been named and which persist under 

 cultivation. 



N. C., Ohio to Minn., southw. to Fla. and Tex. 



la. Tradescantia canaliculata f. albifldra (Slavin & Nieuwl.) comb. nov. 

 (Tradescantia reflexa f. albi flora Slavin & Nieuwl. Amer. Midland Nat. 11 : 

 600. 1929.) This is a white-flowered form which is rather frequent where 

 the species is found. 



lb. Tradescantia canaliculata f. Lesteri (Standley) comb. nov. 

 (Tradescantia reflexa f. Lesteri Standley. Rhodora 32: 32. 1930.) This 

 is a form with "poppy-red" colored flowers which was found near Tremont, 

 Porter County, by Lester A. Beatty. 



lc. Tradescantia canaliculata f. Mariae (Standley) comb. nov. 

 (Tradescantia reflexa f. Mariae Standley. Rhodora 32: 32. 1930.) This 

 form with white petals, margined with lilac was found near Fowler, Benton 

 County, by Mary Bremer. 



2. Tradescantia subaspeia Ker var. typica Anderson & Woodson. 

 (Contr. Arnold Arboretum 9: 49. 1935.) (Tradescantia pilosa Lehm.) 

 Zigzag Spiderwort. Map 594. Usually infrequent but well distributed 

 throughout the state except in the northern part from which there are no 



