408 



DISTRIBUTION OF PLANTS. 



Nov. gen. Aral., (Tetraplasandra of Gray, No. 1). A fine tree, thirty feet high with the 

 trunk a foot in diameter ; leaves impari-pinnate, trijugis, the leaflets very large, entire, 

 white-tomentose beneath ; umbels decompound, covered with close tonientum ; stamens 

 thirty to forty. Pahuhali ; observed also by Mr. Brackenridge, perhaps higher up "in 

 the Puna District." 



(No. 2) ; leaves pinnate, the leaflets entire, fleshy. On the mountain-ridge behind 



Honolulu, at the elevation of 2000 feet. 

 Arceuthobium (No. 4) j stems very much compressed. Upper margin of the forest on 



Mauna Kea, at the elevation of 6700 feet; and in other mountainous localities. 

 (No. 5) ; possibly not distinct from the last, but the stems entirely cylindrical, not 



dilated. Southern flank of Mauna Kaala ; also, on the mountains behind Honolulu; 



and in other mountainous localities. — The only Loranthaceous plants met with. 

 Psychotria ? (No. 4) ; leaves obovate, penninerved; peduncled thyrsus. Puna on Hawaii, 



and in other localities ; frequent. 

 (No. 5). Arborescent, twenty feet high, with the trunk five inches in diameter; 



leaves smooth, obovate, pietioled, distant at base; terminal long-peduncled cymes; co- 

 rolla 5-fid, the tube short. North coast of Hawaii near Hilo, growing at the elevation 



of only fifty feet above the sea. 

 Ixoroid (No. 1). A "shrub, eight feet high ;" the young branches pubescent, but the 



leaves smooth ; inflorescence terminal ; corolla 4-fid, greenish, the tube slender. 



" Woods in the Puna District" on Hawaii, Brackenridge. 

 No. 2 ; a second species. A shrub, eight to ten feet high ; thyrsi arising below 



the leaves and along the stem from the old wood ; calyx 4-fid. Forest on the North 



flank of Mauna Kea. 



— ; compare the last sp., and also Psychotr. ; leaves smaller, penninerved. A tree, 



forty feet high with the trunk two feet in diameter ; inflorescence lateral and terminal ; 

 fruit apparently two seeded. Forest on the Windward flank of Mauna Kea. 



; compare prior sp. A shrub, six to eight feet high ; slender greenish incon- 

 spicuous flowers. In the mountain-defile across West Maui. 



? nov. sp., (No. 3). Upper surface of the leaves shining, as if glutinous; fruit 



clustered, small, containing two seeds. On the mountains behind Honolulu. 



(Myonima ?, No. 2). A "stunted tree, ten feet high;" hairy; intermediate stipule deci- 

 duous ; fruit solitary, peduncled, 4-angled, ci'owned with contracted calyx having obso- 

 lete teeth ; apparently four seeds ?. Tauai. 



Gen. (Garden.?, No. 1); the " nau." Leaves pilo.siuscul., large, long, attenuate, each 

 pair of petioles uniting in a common sheath at base ; fruit 4-angled, containing nu- 

 merous small seeds. Growing on the " mountains behind Honolulu," the specimen 



Citrullus (bis Samoa to Tongatabu, the United States, and No. 1 Tropical Africa). The 

 water-melon. Introduced by colonial Whites. 



Carica papaya, (bis Metia to the Feejee Islands, and No. 1 Tropical America). Culti- 

 vated. 



Portulaca oleracea, (bis United States, Taheiti and Tongatabu). Abundantly natural- 

 ized; in the Desert environs of Honolulu, springing up with the Senebiera and other 

 weeds after the slight winter rains. Introduced by colonial Whites. 



Opuntia; compare O. Dillenii. Naturalized in the arid Leeward portion of Oahu, espe- 



