414 MUSCI. Hypnum. 



attenuate to a flexuose point : capsule gibbous-ovate on a red rugose pedicel ^ inch 

 long, with broad compound annulus and short acute-conic operculum : ciliolse 2, very 

 slender. — Trans. Amer. Phil. Soc. xiii. 12; Sulliv. & Lesq. 1. c, n. 502. 

 On the ground under Umhellularia Califomica, Oakland, Bolanclcr. 



•»— -I— H— Branching jjinnate or somewhat irregular and fascicled : leaves not 

 sulcate or scarcely so, nor decurrent ; ar eolation Unear-ohlong, rounded at the 

 angles : flotoers dioecious: capsule sometimes nearly erect and suhsymmetrical : 

 pedicel smooth. 



17. H. myosuroides, Linn. Stems slender and branches incurved, often 

 flagellifunn : leaves ovate-lanceolate, very finely acuminate, serrulate above, costate 

 beyond the middle ; perichastial leaves with very slender abrupt recurved apex : 

 capsule oblong on a smooth elongated pedicel : processes (at length bifid) nearly 

 equalling the teeth, a half longer than the 2 ciliolte. — Engl. Bot. t. 1567. Isothe- 

 cium myosuroides, Brid. ; Bruch & Schimp. Bryol. Eur. t. 53-1 ; El. Dan. t. 2750. 

 Eurhynchium myosuroides, iSchimp. 



Near San Francisco, in dry woods (Bigelow) ; Port Discovery, Washington Territory (Pickering) ; 

 Atlantic States and Europe, on the ground, rocks, and at the roots of trees. A very variable species, 

 to which the following are probably to be referred, and holding an intermediate position between 

 several of these nearly allied groups or so-called genera. 



18. H. Stoloniferum, Hook. Much larger, the leaves more elliptical, minutely 

 papillose on the back above the middle and more coarsely serrate, and capsule more 

 drooping ; the ciliolas equalling the processes. — Muse. Exot. t. 74 ; INIitten, Journ. 

 Linn. Soc. viii. 34 ; Lesq. in Mem. Calif. Acad. 31 ; Sulliv. & Lesq. Muse. Am.-Bor. 

 Exsicc. 2 ed. n. 425. H. myosuroides, var. stoloniferum, Muell. Syn. ii. 500. 



Common on trees in the Coast Ranges {Menzies, Bigelow, Bolander), and northward to Alaska. 



1 9. H. Bre"werianum, Lesq. In dense tufts on dry rocks, of a darker color, 

 with short stems and abruptly short-acuminate leaves strongly concave and scarcely 

 denticulate. — Trans. Amer. Phil, Soc. xiii. 12, and Mem. Calif. Acad. i. 32 ; Sulliv. 

 & Lesq. 1. c, n. 426. 



On metamorphic sandstone around San Francisco, Brcioer, Bolander. 



20. H. aggregatum, ]\litt. Densely tufted, dull yellow, the elongated branches 

 simple or sparingly divided : leaves broadly ovate, shortly acuminate : capsule cylin- 

 dric, inclined, somewhat incurved ; operculum acuminate : ciliolse solitary, half as 

 long as the processes. — Journ. Linn. Soc. viii. 35, t. 6 ; Lesq. in Mem. Calif. Acad. 

 i. 32. H. Breiverianum, var., Sulliv. & Lesq. 1. c, n. 427. 



On trunks of trees in deep canons, Oakland {Bolander) ; Vancouver Island, Lyall, Douglas. 

 Mitten, 1. c, describes several other species {H. acuticiispis, etc.) of Washington Territory and 

 British Columbia, wdiich much i-esemble these. H. leucocladulmn and H. comjn-essuhim, Muell. 

 (Flora, xxxiii. 79), from Oakland, Oregon {Nevius), belong evidently to the same alliance. 



-1— H— -f— -)- Branching irregidar : leaves subdecurrent, not sulcate; areolation 

 very 7iarroiv, fiexuous, dilated at the angles : flowers dioecious : pedicel rough. 

 — ScLEROPODiUM. {Scleropodium, Schimp.) 



21. H. caespitosum, Wils. Densely cespitose, creeping, with short simple 

 incurved branches : leaves spreading, subsecund, broadly ovate- to oblong-lanceolate, 

 acutely acuminate, concave, serrulate, margins flat, costa reaching above the middle : 

 capsule oblong, suberect upon a minutely tuberculate purple pedicel about -| inch 

 long, somewhat incurved ; operculum conic-rostellate. — Engl. Bot. Suppl. t. 2878, 

 and Bryol. Brit. t. 55 ; Sulliv. & Lesq. 1. c, n. 510. Scleropodium coispitosum, 

 Bruch & Schimp. 1. c, t. 556. 



On shaded rocks and on the ground among redwoods, Oakland {Bolander) ; Europe. 



22. H. illecebrum, Schwaegr. In less dense bright green patches, with in- 

 curved obtuse branches about an inch long : leaves closely imbricated, roundish 



