352 TWENTY-FIRST KET'ORT. 



V. Pivktriuffii var. lucmtris (Keanioy) Hitch, ranges along the (ireat 

 I>akes and probably occurs iu Michigan. 



Holcu.s Authors not L. becomes (Jinania Kub. (i. Jnntifiis (L.) Hul)l». Velvet 

 (irass. " Detroit, August, 1908, No. 2002. 



Eatouia Authors not Raf. becomes Reboulea Kiuitli. 7.'.. nhtnmla var. 

 lohata (JAu.) O. A. F. doubtless occurs in Michigan as according to (iray's 

 Manual it is the commonest form of the species in the north. 



Trinttum. suhupkiilnm becomes T. npieahdii (L.) Richter. Plants answer- 

 ing to the European type were collected at Lake Linden, Keweenaw I'eninsula, 

 in August, 1904, No. 1825 V^. A very rare species here, the common form being 

 the var. )ni>lle (Mx.) Pipei-^ ; fre»iuent along the rocky shores of the Peninsula, 

 No. (558, August 10, 1888. 



Arena Hativa L. An escape from cultivsition is to be found tliroughout 

 the State, as are all the cultivated grains. They are all found with sufficient 

 frequency to be listed as adventitious. Keweenaw county, August 15, 1888, 

 No. 528; Ypsilanti, June .JO, 1892, No. 528a; Belle Isle, August 26, 1892, No. 

 528b. 



^IHirtinu vynoaiiroHlvn of the Michigan Flora Itecomes S. Michauxiana 

 Hitchc. The common form of this species in Michigan is a plant witli a panicle 

 about a foot long, with numerous short spikes, three inches or less in length 

 on short peduncles %-% of an inch long, lemmas 2 toothed. River Rouge, 

 September 15, 1918, No. 5134, and September 30, 1915, No. 4119; Belle Isle, 

 Octob(>r \\\. 1894, No. 1487; Rochtn^ter, September 27, 1917, No. 4053. A long- 

 spiked form may be known as Xpnrtimt Micimuxiamt Hitchc. var. Su'rriEi n. 

 var. An extreme form with panicle over a foot and a half in length, with 

 fewer, longer spikes 5-7 inches long on peduncles 1^2-2 inches. Island Lake. 

 July 10. 1905, No. 1487a. Also Dr. George Suttie, Orchard Lake, July 29. 

 1892, and Waterford, August 27, 1893. A slender form may be known as 

 Hpartina Miehauxiana Hitchc. var. tenxiior n. var. More slender than the 

 species, 3-4 feet high, panicle 1-1 Vi; feet or more long, spikes 1-3 inches in 

 length, scattered, alternate, only slightly exceeding the internode, the upper- 

 most usually shorter than the internode, the terminal often elongated (4-5 

 inches), sessile or on short (not exceeding % of an inch) peduncles; 1st glume, 

 with an iiwn equal to its own length or shorter, Mx-%. the length of the floret; 

 palet about % line longer than its lemma and about equal to the second glume, 

 which has an awn equal to its own length or shorter. Spikelet, exclusive of 

 awn. about four lines long. Li dry sandy lields at River Rcmge, September 

 L"», lOls, No. ,-)1,",8. Apparently a transition towjirds .S'. aUtrnifloni, which it 

 strongly resembles, but the first an<l sc'cond glumes are prominently awned. 



'\ larjrcr lonii i.f tli<- siii-cii'S willi lilahimis sinus Mini h-iivcs. Imt^ wit I) t hi' li.wcsl 

 (7')'' 



shfaths roufih. with .short rcHcx.-d ptilx'sc.-iis, is tho var MA.ms (Vtiscy) ii. coiiib. 

 Trisctum majus (Vasoy) Kjrtli.) Suns<'t I'cak, Colorado, August 30, 1911, No. 24o5M!- 



