MICHIGAN ACADEMY OF SCIENCE. 367 



R. Cauolina var. guanuifloua (linker) ii. comb. (It. humilus var. yrandi- 

 flora Bukcr; Willin. Gen. Rosu I, 207, 1911, and R. obovata lint, according to 

 Kydberg in N. A. Flora XXII, 490, 1918.) Leaves usually obovate and obtuse 

 with a cuneate ba.se. Ferhaps the most distinct of the various forms. Kewee- 

 naw Co., Sept. 10. ISSS, No. ('.94: Parkedale. July 4, lOlS, No. 5036. 



R. Carolina var. lucida (Ehrli.) n. comb. {R. Virginiana Millei*, Gard. 

 Diet. No. 10, 1768; R. humiU.s var. Iiicidu (Ehrh.) Best, Bull. Tor. Club XIV, 

 2.'i6, 1887). In this variety the prickles are usually stouter than in the others,' 

 and often rofloxod or recurved. Parkedale, .July 4, 1918, No. r)0.'I8 ; Orion. 

 .Inly 7. No. r)04r)a. 



LEGUMINACEAE. 



Lcspcdvza capitata Michx. var. hnuiifoUa (DC.) T. & G. R(»chester, Oct. 

 r>, idlS, No. :{r,.'iS ; Bloomfield. Sept. 8, 1918, No. 5108. 



Lnthi/riix palustris L. var. viurtifnlius (Muhl.) A. Gr. f. p.\llida n. f. 

 Flowers white or whitish. Open tamarack swamps. Orion, July 7, 1918, No. 

 5052. 



SAPINDACEAE. 



Aesculna glabra Willd. Bloomfield, Oakland Co., Mr. C. Billington, 1917 ; 

 May 25, 1918, No. 4865. 



ZIZIPHACEAE. 



Rhnmnus cathartica L. At some time or other a hedge was planted on a 

 farm in the Bloomfield Hills region. The hedge or what is left of it, is still a 

 score or so of yards in length, impenetrable, and about 20 feet in height. The 

 region in the vicinity of the liedge is well covered with young plants, which 

 goes to prove that it is spreading from seed and has become naturalized. Sept. 

 8, 1918, No. 5109. 



TILIATACEAE. 



Tilia Americana L. The leaves of the typical species are usually described 

 as glabrous or nearly so. I have seen no Lindens in southern Michigan with 

 glabrous leaves ; a leaf here and there is quite densely pubescent with stellate 

 hairs. Generally, however, the leaves are covered on the under side with a 

 line pubescence with a trace of stellate and long simple hairs. There are two 

 well defined and easily recognized forms based on size and shape of leaves. 

 The large leaved form at flowering time lias tlie leaves 4 or 5 inches wide 

 and 5 or C inches long, measured along the midvein, ovate to ovate-oblong, 

 obliquely, truncate or obliquently cordate, style, peduncle and usually the 

 bract glabrous, pedicles stellate pubescent but branches of the cyme glabrous. 

 This probably is the T. neglecta Spach, Ann. Sci. Nat, II. 2, p. 140, t. 15, 1834, 

 and may be known as T. Americana var. scabba n. var. Junior, July 13, 1918, 



