446 TRANS. OP THE ACAD. OP SCIENCE. 



soft, compressible stems are 8-17 inches high, and always, as 

 far as I have seen, leafless; and when Meyer (Fl. Ross. 1. c.) 

 says that they occasionally bear leaves, he had probably one 

 ot the allied leaf-bearing species before him, which are, at first 

 glance, so much like our plant that they have been almost 

 constantly confounded with it. The spathe is i-l§ inches 

 long and usually exceeds the flowers ; in the variety it meas- 

 ures only 2 or 3 lines and is shorter than the flowers, of which 

 the primary one is sessile and the accessory one peduncled, 

 just as we see it in J. biglumis. Flowers 3 lines or more 

 long; sepals green on the back, bi'own on the sides, pale and 

 membranaceous on the margins; outer ones with 5-7 nerves; 

 stamens less than one-half, often only one-third as long as the 

 sepals; capsule deep chestnut-brown and shining; seeds 0.3 

 line, or including the tails, about 1 line long; appendages as 

 long as, or longer than, the body of the seed, which is deli- 

 cately striate, with 10 or 12 ribs visible (on one side), and 

 distinctly cross-lined ; it is one of the very few species in 

 which we find the appendages as long as, or longer than, the 

 seed itself. 



14. J. Hallii, n. sp.: caespitosus; caulibus (spithameis pe- 

 dalibus) teretibus filiformibus folia teretia setacea longe 

 superantibus; spatha paniculam subsimplicem paucifloram 

 coarctatam vix seu parum superante ; sepalis lanceolatis 

 acutis, exterioribus paulo longioribus stamina 6 bis superanti- 

 bus ; antheris linearibus filamento paulo brevioribus ; stigma- 

 tibus subsessilibus ovarium ovatum cequantibus inclusis ; cap- 

 sula ovata angulata retusa triloculari vix exserta; seminibus 

 oblongo-linearibus striato-reticulatis longe caudatis. — J. arc- 

 ticus, var. gracilis? Gray in PI. Hall & Harb. 1. c. p. 77, ex 

 parte. 



Near Lake Ranch, Colorado, Hall & Harbour, Rocky 

 Mountain Flora, No. 562 ; for the former of whom, Mr. E. 

 Hall, of Athens, Menard county, 111., who discovered this and 

 many other plants in that region, it is named. It seems to 

 be a rare plant, as neither Dr. Parry nor any one else, so far 

 as I know, has obtained it. — Stems very slender, 6-12 inches 

 high ; leaves from 2-5 inches long, grooved just above the 

 vaginal part, terete upwards; spathe as long as, or a little 

 longer than, the compact inflorescence, which consists of 2-5 

 flowers about 2 lines long; capsule deep brown, as long as, 

 or longer than, the acute but not subulate-pointed, chestnut- 

 brown, white-margined sepals; seeds 0.5-0.6 line long, the 

 body of the seed being about 0.3 line long, and the appenda- 

 ges half as long as the body, or often shorter; I notice on one 

 side of the seed about 10 delicate ribs. 



15. J. Pabryi, n. sp.: ca3spitosus; caulibus setaceishumilibus 

 (digitalibus spithameis) folia sulcata sursum teretia superanti- 



