382 | FLORA VITIENSIS. 
Tribus VI. Bryezx.—Theca ut plurimum clavata, levis. Peristomit interni processus carinati, integri vel 
rarissime divisi. Folia levia. Calyptra dimidiata. 
* Flores in caule primario vel in innovationibus terminales. 
1 Folia undique inserta. 
I. Гертозтомом, R. Brown, Linn. Soc. Trans. vol. x. p. 180. Peristomium simplex, internum, mem- 
brana indivisa. 
1. Z. macrocarpum, Hedw. Muse. Frond. vol. ii. t. 10 (Bryum); caules inferne tomento rufo intertexti ; 
folia patentia, oblongo-spathulata, obtusa, carinato-concava, margine superne revoluta, integerrima, nervo in 
pilum brevem simplicem vel elongatum ramosum excurrente, cellulis hexagonis parietibus angustis utriculo 
anguloso contracto repletis; perichetialia conformia, margine latius revoluta, nervo longius excurrente, 
magis ramoso; theca in peduneulo elongato ovali-elliptica, erecta, opereulo parvo conico-hemisphærico.— 
Tahiti (Banks and Solander!); Norfolk Island (Allan Cunningham! Herb. Hooker).—Specimens smaller 
than those from New Zealand. All the species of this genus in the large size of their capsules, and in 
their general appearance, correspond with Bryum, but differ in the firm and dense areolation of their leaves. 
The genus is peculiar to the islands of the Pacific Ocean, including Australia, Tasmania, and New Zealand, 
and the western and extreme southern shores of S. America. 
II. Ввхом, Linn. Peristomium duplex, internum sepius perfectum, rarius imperfectum.—A very 
extensive genus, all the species of which are generally conspicuous for the large size of their elliptical 
pyriform or clavate, erect or more frequently pendulous capsules. A great difference exists among the 
species in the size and substance of the leaves, but they appear to be so intimately connected by 
intermediate states that it is difficult to define groups which, at first sight, appear sufficiently remote to form 
natural sections. 
ж Dicranobryum, C. Mueller, Syn. vol. i. p. 309.— Theca erecta inclinatave. Peristomium internum 
incompletum. 
1. В. coarctatum, C. Mueller, Syn. vol. i. p. 312; Dozy et Molk. Bryol. Javan. t. 115; synoicum; caulis 
humilis; folia comalia parva, ovato-lanceolata, acuminata, nervo crassiusculo rufo excurrente, margine in- 
tegerrima inferne recurva, cellulis parvis oblongis; pedunculus elongatus; theca oblonga, inclinata vel 
erecta, eollo levi vel tuberculis prominulis distorto, operculo conico acuminato, annulo magno, peristomio 
externo dentibus angustis, interno processibus abbreviatis angustis in membrana alte exserta impositis, 
ciliis nullis.—Friendly Islands, Vavau and Lefuka (Harvey !) ; Samoa, Tutuila, on stones and walls (Powell ! 
n. 16).— This species was first described as dioicous, and is also so described and figured in the * Bryologia 
Javanica’ above referred to, but Javan specimens from Junghuhn have the antheridia present in the fertile 
flower in the same manner as in the specimens from Polynesia; some European species which have synoicous 
fertile flowers produce also male flowers only on branches arising from the same stem. The affinity of this 
small species is with B. atropurpureum, Web. et Mohr, and with this it accords in the colour of its foliage 
aud fruit, as well as in having the neck of the capsule distorted; but in the defective internal peristome it 
agrees with some Indian and tropieal American species. All these species differ from those of the grou 
which has been named Brachymenium, in being always found growing on the earth, and not on the bark of 
trees. 
** Webera, Hedw.—Theca inclinata pendulave. Peristomium internum processibus ciliisque plus 
minus perfectis. Folia nitida, immarginata. 
2. В. nutans, Hedw. Muse. Frond. vol.i.t. 4; synoicum; caulis humilis ; folia inferiora patentia lan- 
ceolata, nervo sub apice evanido, margine superne serrulata, cellulis ubique æqualibus elongatis, comalia 
duplo longiora lineali-lanceolata, interiora minora angustiora argutius serrulata, nervis percurrentibus ; 
peduneulus elongatus ; theca nutans vel pendula, sporangio breviter ovali, collo subzequilongo, sicca eras- 
siusculo corrugato subplicato, operculo convexo acuto; peristomium breviusculum, internum ciliis cohær- 
entibus.—St. Paul's Island (Milne!) ; Isle of Pines (Strange !).—These specimens appear to possess no 
difference in aspect, size, or structure from the usual European form. 
*** Eccremothecium, Mitt. Linn. Soc. Journ. 1868.—Theca inclinata pendulave. Peristomium internum 
processibus ciliisque sæpius perfectis, Folia rarius nitida, sæpius limbo marginata. 
3. В. megalostegium, Sull. Amer. Expl. Exped. 1859, p. 9. t. 7.; dioicum, dense cæspitosum ; foliis 
ovato-lanceolatis, costa excurrente breviter cuspidatis, marginibus integerrimis planis; capsula clavata, 
pyriformi-ineurva, nutante vel pendula, late annulata, pachydermi macrostoma ; opereulo permagno, sub- 
hemisphærico, apiculato.— Hawaii, forests on the sides of Mauna Loa (American Expedition !) ; Raoul Island, 
