A. W. Evcms — Hawaiian Hepaticcn of the Tribe Juhuloidem. 405 



or the innermost slightly connate on one side, ovate, bifid about 

 two fifths with broad, acute lobes and acute or obtuse sinus, entire 

 or unidentate on the sides; perianth about one fourth exserted, 

 obovate-oblong, cuneate toward base, truncate above and narrowed 

 into a short beak, ciliate at the mouth, with a narrow postical keel 

 and smooth surface : 3 spikes borne single or in pairs close to the 

 perianth ; bracts in two or three pairs : capsule exserted on a very 

 short stalk; spores yellowish-brown with minute, darker verrucula 

 collected in circular patches. 



Stems 0.17™'" in diameter, lobes of leaves 1x0.85"^™, lobules 

 0.25 X 0.1"''", underleaves 0,6 x 0.6"'"\ leaf -cells at edge of lobe 17/x in 

 diameter, in the middle 22^, and at the base 2o|U,; bract I, lobe 

 2xl"'°\ lobule 1.7x0.6'"™, bracteole I 1.6x0.95'""', bract II, lobe 

 1.35x0.8™"', lobule 1x0.45'""', bracteole II, 0.85x0.5""", perianth 

 2.2x1.2™™, capsule 0.75™™ in diameter, spores 40-50/j(, in diameter, 

 the patches of verruculse about 6/x wide. 



On trees. Oahu: Panoa (Heller); Nuuanu, Mt. Tantalus (Cooke); 

 first collected on the island by Meyen. West Maui (Baldwin). 

 Sandwich Islands (Gaudichaud). 



The marked resemblance between the Frullanim of the Hawaiian 

 Islands and those of the southern United States is a matter of some 

 interest. With the exception of F. apiculata, each of the six species 

 described above has one or more close allies from the latter region, 

 and in some cases the resemblance is very striking indeed. As has 

 been pointed out, F. Aongstromeii is close to F. arietina, F. Sand- 

 vicensis to F. squarrosa, F. Oahtiensis to F. Virginica and F. 

 Meyeniana to F. Do'nnelUi and F. Kunzei. F. hypoleuca finally 

 finds a close ally in F. Caroliniana. The American plant, however, 

 is considei'ably smaller and less densely pinnate ; its leaves are less 

 imbricated and their lobes more uniformly spreading, the divisions 

 of its bracts and bracteoles are less pointed and always entire , and 

 its perianth is proportionately broader at the apex. 



2. JUBULA Dum. 



The genus Juhxda as first proposed by Dumortier in 1822,* in- 

 cluded the two modern genera Juhxda and Frullania. In 1831,f he 

 divided his genus into two sections, Jubuloti/pus, ior his J! JTidchinsice, 

 and Ascolobium, for his «/] dilatata and J. tamarisci (now Frullania 

 dilatata and F. tamarisci respectivel}'). In 1835J he raised his two 



* Comm. Lot. 112. f Sylloge Jmigermanu. 36. 



X Recetiil d'obs sur les Jung. 12. 



