90 BOTANICAL GAZETTE. 



Resembles B. ungiticulita, Hedw., but difters in its shorter more oblong not Un- 

 gulate leaves, with the ordinary cells not granulose, the basal ones less pellucid etc. 

 Costa minutely papillose on the back. 



Barbula ? WoLLEi, n. sp. — PlantiE dense csespitosse, subfragiles, saturate virides ; 

 caule erecto subsimplici, foliis siccitate subcrispatis madefactis flexuoso-patentibus 

 sublinearibus apice canaliculato excepto planiusculis paulo undulatis margine planis 

 miuutissime eroso-serratis apice subacuminato-acutatis, costa percurrente haud lutes- 

 cente: flores et fructu ignoti. {\.xi TrichoHtomii yq\ Didyinodontis species. ^ ) 



Rocks in a ravine, near Bethlehem, Pennsylvania, Bau. 



Intermediate in many respects between Bavbula (•<ef(piU>sa and Didymodon cylindri- 

 cus. From the former it diflers in its longer stems, rather broader less carinate less un- 

 dulate and more fragile leaves, minutely erose-serrate on the margin, sub-acuminate by 

 the incurved margins at the apex, rather less pellucid at the base, and with the costa 

 neither pellucid when moist nor shining on the back when dry. From the latter it 

 differs in its twice larger size, broader, less fragile accuminate erose-serrate leaves, etc. 



Tkichostomum Coloradense, n. sj). — Plantaj pusillie fusco-virides ; caule tenui 

 subflexuoso 3-3 lineas longo, foliis inferioribus remotiusculis superioribus congestis 

 patulo-incurvis linealibus toto longitudine valde convolutis acutiusculis minutissime 

 granuloso-papillosis obscure minute areolatis, basi subpellucida, margine plana 

 integerrima tenui, apice extremo subpellucido nonnullo minute serrato, costa basi lata 

 deplanata tenuissima supra medium vix a lamina distinguenda longe ante apicem 

 evanida : cfetera desunt. 



Yosemite Valley. Communicated by J/r. James. 



This species is well distinguished from all others of the genus known to me by its 

 long linear convolute leaves plane on the margin and incurved towards the apex, and 

 with a remarkably thin costa which is not at all prominent on the back. The cells at 

 the base of the leaf are very small narrow and pellucid, soon passing into quadrate, and 

 then into granular above. 



& 



Some Notes on Variations. — LiafriK scnrioan, L., found in 1873-4 around Grand 

 Rapids, Mich., frequently had as many as 80 heads on a spike, heads often as many as 

 60-flowered. Liatrix Rquarrosa, TFi^W., often had the i-emarkable number of from 70 to 

 92 florets in a head. L. squarrosa, L. cyliiidrica, L. scarioxit, and L. pycnostnchya, almost 

 always presented the characters of pubescent achenia, and ]:)unctate leaves and scales. 

 But the most remarkable Liatris was one that seemed to be intermediate between L. 

 Rcariom., and L. squan-osa, found south of the city along side of the Grand River Valley 

 R. R. Heads of flowers usually large, and the upper ones — very seldom the lower — had 

 colored scales, much longer than the florets, intermixed with them. Sometimes there 

 would be twelve or fifteen of these scales; often not more than five or six. Otherwise 

 the receptacle was smooth. Have never seen this feature in anj' other locality, nor heard 

 of it anywhere. 



Another singular variation noticed was in the Bainuicidtis mnltifidus, Pursh[i2. 

 Purshii, Rich.]. It very often occun-ed, in the numei'ous ponds around Grand Rapids, 

 with double and quilled flowers and often with the scales changed to tubular appen- 

 dages, with an entire, or lacerate border. The flowers were very large for the species, 

 and the leaves sometimes ver^- much dissected, sometimes with but few divisions. 

 On one occasion I came upon a patch — or field— of some two acres nearly covered with 

 the bright golden flowers. I could see them for a long distance before I reached them, 

 and when I reached the border of what I afterwards found was a drained pond I was 

 much surprised as well as interested to find all the plants growing in the moist soil 

 with leaves not more divided than in It. bulbostix, and stems from five to ten or twelve 

 inches high, and both leaves and stems pubescent. There were two or three low places 



