6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 85 



papillosis, papillis elatis, diam. 6 /x. Pedicellus 3 mm. longus, pallidus, 

 siccus A'alde arcuatus, humidus erectus ; calyptra cucuUata, dimidium 

 partem capsulae obtegens ; capsula oblonga, clausa ; operculum baud 

 secedens, e basi conicum obHque rostratum ; sporae papillosae, 18-20 fi. 

 Easily distinguisbed from tbe otber species of tbe subgenus Klcio- 

 zvcisia by tbe lengtb of tbe pedicels. 



HYMENOSTOMUM MEXICANUM Card. Rev. Bryol. 36: 70. 1909 



Puebla: Road to Cbolula (4849). \ alle de Mexico: Tenayuca 

 (Bro. Aniahle 1380). 



Tbese plants conform closely to Cardot's type except in tbe in- 

 florescence. Tbe type specimen bas a paroicous inflorescence ( teste 

 Cardot) ; bere it is autoicous (male flower on a sbort pedicel under 

 tbe female flower). However, I do not tbink it is wise to base a 

 new species on tbis difference alone; it seems more logical, in my 

 opinion, to conclude tbat in H. uicxicaiiuui tbe inflorescence is variable, 

 occasionally paroicous but more often autoicous, as is normal among 

 tbe species of tbe genus Hymciiostoiuuiii. 



GYMNOSTOMUM CALCAREUM Bryol. Germ, i: 153, pi. 10, f. 15. 1823 



Valle de IMexico : ^Morales (Bro. Amahlc 1595), c. fr. 

 Tbis species is new to Mexico. 



GYROWEISIA OBTUSIFOLIA (Hampe) Broth, in E. & P., Nat. Pflanzenfam. 



I': 389. 1902 



Puebla: Cerro Guadalupe (666) ; Hacienda Alamos (4634). 

 Morelia: Loma del Zapote (7507). 



Tbe lea\'es of tbis species are identical as to form and areolation 

 witb tbose of HusiwticUa rcvoluta. But tbis is tbe only likeness, tbe 

 leaves of G. ohtusifolia being exactly plane on tbe margin and baving 

 tbe costa balf as narrovt^, not dilated at tbe apex. 



GYROWEISIA PAPILLOSA Ther., sp. nov. 



Morelia: (4927) ; Loma Santa Maria (7887). 



Pusilla, caulis vix i mm. Folia erecto-appressa, parum crispula. 

 difficile emollita, oblonga vel oblongo-lanceolata, summo late obtusa, 

 valde concava, integerrima, marginibus planis. costa basi 30 /^i. superne 

 dilatata, sub a])icem evanescente, cellulis basilaribus byalinis, rectangu- 

 laribus, cellulis mediis et superioribus quadrato-bexagonis, cbloro- 

 pbvllosis, papillosis, 8-10 /x, parietibus tenuibus. Pedicellus ]xallidus, 



