Araliaceae. 



Tetraplasandra Waialealae is really the only tree of any size at the summit, 

 where the rest of the vegetation is stunted. It is associated with Pelea Waia- 

 lealae, the Anouia of the natives, LagenopJtora mauiensis, Sanicula sandwicensis 

 var.. Lobelia kauaiensis. Lobelia macrostacJtys var., Drosera longifolia, Dubautia 

 Waialealae, Geranium Jin mile var. Kauaiense, etc. 



It is the second species of Tetraplasandra which has been so far recorded 

 from Kauai, and is peculiar to Waialeale, though it may be found along the 

 Kaluiti and Kailiili streams a little below the summit. The wood is soft and 

 white. 



Tetraplasandra Lanaiensis Rock. 



TETRAPLASANDRA LANAIENSIS Rock. Coll. Haw. Publ. Bull. 1. (1911) 12, pi. 2. 



Leaves 30 to 38 cm long, leaflets 5 to 7, oblong obtuse or bluntly acuminate, uneven- 

 sided at the base, midrib prominent, 8 to 10 cm long, 4 to 5 cm wide, dark green above, 

 light underneath, the terminal leaflet on a petiolule of 4 cm which is articulate near the 

 blade, the lateral ones on petiolules of 1 to 1.5 cm, subcoriaceous; inflorescence thrice 

 umbellate, not erect, but drooping, the 3 to 5 peduncles on a common rhachis of about 

 2.5 cm, about 20 cm long, bearing umbels of 17 to 21 slender droopings rays of 8 to 10 cm 

 length, these again umbellate with 7 to 13 pedicels; calyx tubular 6 mm with a denticu- 

 late border, petals 5 to 6, lanceolate, greenish-yellow, 7 mm long, stamens twice as many 

 as petals, ovary 3-celled, stigmas sessile. 



This tree was discovered by the writer on the Island of Lanai and described 

 by him under the above name. It is rather small, only about 20 feet high, with 

 a trunk of a few inches in diameter. It branches irregularly, and as it was 

 crowded in with other trees it was impossible to form an idea of its general 

 aspect, 



It is remarkable in the genus Tetraplasandra for its large inflorescence, 

 which, instead of being erect, is drooping, and for its very small flowers. The 

 leaves are dull and of a light-green color, making the tree quite conspicuous 

 among the dark-leaved Maba, Suttonia, and Sideroxylon, with which it is asso- 

 ciated. The tree is peculiar to the Island of Lanai and was seen only in Kai- 

 holena Valley, crowded by other trees at an elevation of 2000 feet. Kaiholena 

 Valley, belonging to the drier regions of Lanai, is extremely interesting and 

 harbors a very multiformous tree flora. 



Tetraplasandra Lydgatei (Hbd.) Harms. 



TETRAPLASANDRA LYDGATEI (Hbd.) Harms in Engl. et. Prantl Pflzfam. Ill, 8 

 (1898) 20. Triplasandra Lydgatei Hbd. Fl. Haw. Isl. (1888) 153; Del Cast. 111. 

 Fl. Ins. Mar. Pacif. VI (1890) 184. 



Leaves 20 to 30 cm long; leaflets 5 to 9 on petioles of 8 to 16 mm, oblong 7.5 to 9 

 cm long, 2.5 to 4 cm, obtuse and slightly emarginate, contracting at the base, thin 

 chartaceous; inflorescence compound-umbellate from a short common rhachis of about 12 

 mm, the 4 or 5 slender peduncles bearing umbels of about 12 slender pedicels of 16 to 18 

 mm; calyx broad obconical, 5 mm, with an undulating border; petals 5, cohering at 

 their apices, 6 mm; stamens 12, about 1/3 shorter, with straight or recurved anthers; 

 ovary 4 celled, inferior, the disk slightly raised, with sessile stigmas; drupe ovoid-globose, 

 8 to 10 mm in diameter, obtusely 4 angled, the short conical apex finally elongated into 

 a short stylopod. 



343 



