182 THE JOURNAL OF BOTANY 



amplexicaules. Cymc& paniculatae, pedunculo petiolum longe 

 superante. Type in Herb. N. York Bot. Gard. 



Stem 20-30 cm. 1., 2-3 mm. br., sometimes rooting below at 

 the nodes, densely covered with short broadly linear cystoliths ; 

 internodes 1-5-3 cm. 1. Leaves 5-3 cm. 1., 3-1-5 cm. br., basal 

 nerves produced to about three-fourths of their length, the others 

 not visible on upper surface, connected reticulately beneath ; 

 cystoliths on upper surface linear, beneath thinner and smaller ; 

 petioles 8-22 mm. 1. ; stipules 5-6 mm. 1. Male cymes, clusters 

 dense-flowered, peduncle 1-1*5 cm. 1., flowers subsessile or with 

 pedicels to 1 mm. 1. ; perianth 1-25 mm. 1., coherent at base, 

 segments ovate, with a long acuminate dorsal appendage about 

 one-half their length ; anthers barely -3 mm. 1. Female cymes, 

 clusters few-flowered, peduncle 2-5-3 cm. 1., flowers sessile or sub- 

 sessile with pedicels to -3 mm. 1. ; median perianth-segment about 

 •6 mm. 1., dorsal appendage short, subcorneal, about on a levelwdth 

 apex ; lateral half as long, broadly elliptical. 



Hab. — In crevices of rocks, Peckham Woods, Upper Clarendon, 

 2500 ft., July, Harris ! 10,948. 



This species comes also near to the group of species which 

 includes P. ohtusata Liebm. and P. diffusa Wedd., but it differs in 

 the flowers and also in the leaves. 



Explanation of Plate 518. 



Fig. 1. Pilea oUanceolata, natural size. 2. P. Weddellii, a, male flower; 

 h, c, d, e, female flower in various stages ; /, fruit ; g, perianth with staminodes 

 {p, perianth ; s, staminodes) after escape of fruit ; A, cystoliths on portion of 

 upper part of leaf . 3. P. rnfescens, a, male flower; h, fruit; c, cystoliths on 

 portion of upper surface of leaf. 4. P. oblauceolata, a, b, female flower in 

 different stages ; c, fruit with perianth and staminodes folded in (s, staminodes) ; 

 d, perianth and staminodes opened out {s, staminodes) ; e, cystoliths on portion 

 of upper surface of leaf. 5. P. Elizabeihcc, a, male flower ; b, cystoliths on 

 portion of upper surface of leaf. 6. P. appendicilata, a, male flower ; b, female 

 flower ; c, cystoliths on portion of upper surface of leaf, 7. P. troyensis, a, male 

 flower; b, fruit ; c, cystoliths on portion of upper surface of leaf. 8. P. lamii- 

 folia, a, male flower ; b, fruit ; c, cystoliths on portion of upper surface of leaf. 

 9. P. Hollickii, a, male flower; b, cystoliths on portion of upper surface of 

 leaf. 10. P. silvicola, a, male flower; b, cystoliths on portion of upper surface 

 of leaf. 



Figs. 2-10 all X 10, except fig. 2, b, c, d, and 4, a, which are x 20. The 

 fruit is in each case surrounded by the persistent perianth. The hairs on leaf- 

 surface, where they occur, are not indicated. 



LANCASHIEE ASCOMYCETES. 

 By Harold J. Wheldon. 



Mycology has received but little attention in Lancashire from 

 the older botanists, and local floras and lists contain very meagre 

 records or none at all, and such as are given refer almost exclu- 

 sively to the larger species. 



In investigating the fungus flora of West Lancashire, having 

 undertaken to prepare an account of the fungi of the adjacent 



