BOTANICAL GAZETTE. 13 



PoA Lemmoni, n. .sp.— Among some grasses received from Mr. J. G. Lemmon, 

 Sierra couutj', California, two years ago, was one whicli I have since distributed as Poa 

 Leminoiu. Its cliaractcrs may be given as follows : 



Poa Le.mmoxi. — Whole plant light green and somewhat glaucous, culms wiry, 

 erect, 1 to \% feet high; radical leaves setaceous, involute, pungently pointed, slightly 

 scabrous on the margin, 2 to 6 inches long; culm smooth, with about 3 leaves whose 

 sheaths arc longer than the internodes, the upper one sheathing the base of the panicle, 

 the blades 3 to 3 inches long and setaceous; panicle contracted, one-lhird the length of 

 the culm, or more, rays about in lives, unequal, from 1 to 4 inches long, and the longer 

 ones twice as long as the internodes of the panicle, appressed, slightly scabrous; spike- 

 lets linear, on rather slender pedicels, 5 to 6 lines long, 7 to 9-flowered, the glumes 

 small, the upper one two-thirds, the lower one about half the length of the lower palet, 

 lanceolate and acutish; the lower palet narrow, linear, about 1 line in length, convex 

 on the back and slightly compressed near the apex ; very finely pubescent or minutely 

 scabrous, obtuse or sometimes slightly acute, scarious at the tip, purplish on the margins. 



This grass belongs to the genus Schleroddoa, P. de B., which Dr. Gray places under 

 Olyceria, but which Mr. Bentham includes in Poa. It differs from Poa chiefly in the 

 linear spikelets and small unequal glumes. 



The genus or section Heleochloa, Fries., is essentially the same. The section 

 Atropis, Trin., as given in Mem. Imp. Acad. Sciences, St. Petersburg, 1836, "spikelets 

 linear, lower glume less than half as long as the florets," would seem also to come 

 under the same sub-division. But the California grass distributed by Bolander and 

 others as Atropis Cdlifomicn, Munko, has nearly equal glumes about as long as the 

 florets, and the spikelets are much larger and broader. — Geo. Vasey, Wdshington, De- 

 cember, 8, 1877. 



Addenda. — During the past season several new plants have been added to the Flora 

 of JeflFerson Co. The re-discovery of Spermncoce glabra has already been recorded in 

 these pages. Among the additions are three very desirable species and we notice them 

 briefly. Martyrdaproboscidea, Glox., was found this year well established on tlie river 

 bank at Madison. The seeds were probably drifted down and deposited at the overflow 

 in August, 1876. If the plant reappears next season we hope to make some observa- 

 tions on its insectivorous (V) habits. 



Iris cristata. Ait., has establislied itself on the rock}' banks of a creek near Han- 

 over. Xo plants were found in bloom but the species is undouijted. 



Ophioglossum vulgattun, L. — Four specimens in good fruit were secured tiiis spring 

 and numbers of sterile fronds were seen near the same locality. — B. 



Nelumbium Luteum in Michigan. — In volume one, number four, Mr. Frank H. 

 Tuthill, of Kalamazoo, says, "this plant is found 14 miles south of this place (Kalama- 

 zoo), and this, I believe, is its only station in our State where it flowers. It grows in a 

 mill-pond, and hence must have been introduced after the country was settled." Two 

 or three years ago, I received flowers and leaves which wei'c said to have been taken 

 from a natural pond called Indian Lake, situated some twelve miles south-east of Kala- 

 mazoo, or about eight miles south of Galesburgh. I have lately received a card from 

 Mr. H. Dale Adams of the latter place, who speaks of the locality called Indian Lake. 

 He also speaks of the mill-pond. Mrs. Adams once lived near this mill-pond, made in 

 1829. She thinks there was then a natural pond (now a part of the mill-pond), in which 

 grew the Nelumbium. This plant is now found on one or more islands in the Detroit 

 river, where an effort was made a few years ago to introduce it, though in some parts of 

 the river it may be indigenous. It is quite abundant at Monroe, where it was known to 

 the Indians a long time ago. It is plenty in the Maumee river in Toledo, Ohio. — W. 

 J. Beal, Agricul. College, Laming, Mich. 



