DITKICHUM. 89 



Var. /3. STEiCTUM. Smaller. L. narrower, straight. 

 Caps, nearly spherical. 

 Scotland. 



h. Nerve broad, cells small. 



122. P.subulatum, Hm(^s. St. |incli. L. lanceolate, 

 sharply tapering from a broadish base, not keeled, 

 serrulate nerve ceasing near the apex; per. 1. almost 

 setaceous. Caps, roundish-ovoid, pale brown, immersed, 

 on a very short pedicel. 



Banks and fields. Common. Spring. 



123. P. alternifolium, Kaulf. St. sometimes with 

 innovations, ^ inch long, or more ; st. 1. lanceolate 

 acuminate from a broad base; per. 1. subulate-setaceous, 

 nerve excurrent, and forming nearly all the upper half 

 of the leaf. Caps, ovoid, immersed, brownish, with an 

 oblique point. 



Banks and fallow ground. Spring. 



Fam. 2. Ditricheae. 



27. DITRICHUM, Timm. 



a. L. squarrose. Caps, cylindric. 



124. D. tenuifolium, Schrad. (^Geratodon eylindricus, 

 ed. 1). St. ^ inch, gregarious. L. subulate from a 

 dilated, ovate, amplexicaul base, flexuose, minutely 

 toothed above, nerve forming the whole subula. Caps, 

 cylindrical, smooth, erect or slightly curved, on a pale, 

 slender seta, lid conical. 



Sandy banks. Ears. May, June. 



Yorkshire, Cheshire, Lancashire, Sussex, Scotland, 

 Ireland. 



125. D. tortile, Schrad. St. j inch, gregarious, sub- 

 flexuose. L. mostly secund, somewhat falcate, lanceo- 



