182 THE JOURNAL OF BOTANY 



Fissidens polyphyllus Wils. grows in a stream by Bodies Hotel, 

 and in peaty ground near Adrigole Campylopus Shaivn Wils., first 

 discovered there by Rev. C. H. Binstead, still thrives, accompanied 

 by C.flexuosus Brid. and var. uliginosus Ren., C.pyriformis Brid., 

 C. fragilis B. & S., C. atrovirens De Not., and vars. falcatus 

 Braithw. and muticus Milde, and C. brevipilus B. & S., with its 

 var. auriculatus Ferg., a fine array of Campylopus species, not 

 often found growing together within an area of a few square yards. 



A NEW HYBRID ROCK-ROSE. 



By the Rev. E. S. Marshall, M.A., F.L.S. 



Helianthemum Chajlecistus x marifolium, n. hybr. ( x 

 H. Bickhami E. S. M.). — Duae exstant formae ; haec H. Chamcecisto, 

 ilia H. mar if olio habitu propior. Prima flores habet majores ; 

 sepala sat copiose appresso- vel adscendenti-pubescentia, crinibus 

 quam in H. marifolio subduplo brevioribus, albisque, nee fusce- 

 scentibus ; petala saepius rubro tincta vel ad apicem colorata ; 

 folia majora, H. Chamcecisto accedentia. Secunda primo obtutu 

 H. marifolium paene omnino simulat ; tlores parvi et folia 

 densissime conferta parentem alteram vix indicant, sepalorum 

 tamen pubescentia (arete appressa, curta, rara) notam indubiam 

 H. Chamacisti praebet. Utraque forma folia exhibet (ut in H. 

 Chamcecisto) stipulata; necnon in ambobus capsulas vidimus 

 perfectas : ergo, ut videtur, hybridum fertile est. 



Two forms occur ; one approaching H. Chamcecistus in habit, 

 the other, H. marifolium. The first has rather large flowers ; 

 sepals with fairly plentiful appressed or ascending pubescence, 

 the hairs about half as long as in H. marifolium, and white, not 

 brownish ; petals frequently tinged or tipped with red; leaves 

 rather large, approaching H. Chama?cistus. The second, at first 

 sight, almost entirely resembles H. marifolium ; the small flowers 

 and very densely crowded leaves hardly suggest its other parent ; 

 but the pubescence of the sepals (closely appressed, short, scanty) 

 affords a sure sign of H. Chamacistus. Both forms bear stipulate 

 leaves (as in H. Chamcecistus) ; we have also observed well-formed 

 capsules in each, so the hybrid is, to all appearance, fertile. 



On June 28th of last year Rev. E. F. Linton and I, guided by 

 Mr. Spencer H. Bickham, went to Llandudno, t.-c. 49 Carnarvon, 

 and were greatly struck by the abundance of these two species on 

 the south side of the Great Orme's Head, above the town. Being 

 aware that hybrids are not uncommon in Helianthemum, we 

 thought that intermediates might be found, though H. marifolium 

 was already quite past flower, in this warm spot ; and a short 

 search was rewarded by three or four plants of the first form 

 being detected. A few days later Mr. W. A. Shoolbred came 

 across the same form close by ; so it is probably not scarce there. 

 On July 9th the second form — one root only — was obtained near 



