FLORA OF THE HAWAIIAN ISLANDS. 163 



wMte beneatli, a little duller above. Branches and peduncles puberu- 

 Sent. Pedicels, bracts, calyces, &c., white silky. 



Ha5. Var. 1, on the high central plateau of Hawaii. Var. 2, the decumbent form on 

 She summits of the mountains of Kauai and "West Maui, in cold and wet soil; the upright 

 (form from the highlands of Hawaii. Var. 3, on the unwooded slopes of Haleakala, East 

 Maui, at an elevation of 7,000 feet and more. 



3. G. OVATiFOLiuM Gray. (Enum. No. 62.) Shrub 2° -3° high, 

 branches clothed with the stipules as in the preceding species. 

 Leaves chartaceous or coriaceous, ovate, more or less acute, sharply 

 and finely serrate with mucronate teeth except towards the entire 

 base, l'-2.i' long, 7-11-nerved, the upper surface somewhat glab- 

 rate and green with age, below whitened with a silky pubescence. 

 Petioles slender, i'-l-i' long, pubescent. Peduncles opposite the 

 leaves, 3-7-flowered, or sometimes only 1-flowered, about 1' long. 

 Sepals ovate-oblong-, mucronulate, sometimes tinged with purple. Pe- 

 tals white with purple veins. 



North side of the upper region of Haleakala, East Maui. 



4. G. ARBOEEUM Gray. (Enum. ISfo. 63.) Arborescent, the trunk 

 6° - 12° high, 4' or more in diameter. Branchlets squarrose with the 

 persistent stipules, which are like those of the preceding species, when 

 young pubescent with soft hairs, as are the leaves, peduncles, calyx, 

 &c. Leaves chartaceous or membranaceous, ovate or oval, obtuse or 

 acute, rounded and subcordate at the base, sharplj^ serrate, about 

 7-nerved, greenish on both sides, more or less glabrate with age, 

 I'-l^' long, 1', more or less, in width. Petioles 3"- 8" long. Pedun- 

 cles 1-2-flowered, or perhaps more, terminal or opposite the leaves, 

 ^' - 1' long, subulate-bracted. Flowers larger than the other species. 

 Sepals oblong or oblong-lanceolate, abruptly awn-pointed, G^' long. 

 Petals red, obovate-spatulate, 8" - 10" long, the three upper more up- 

 right and cucullate. — A remarkable species. 



Upper border of the woods above Ulapalakua, East Maui, at 6,000 feet elevation. 



2. OXALIS Linn. 



Flowers regular. Sepals 5. Petals 5. Glands none. Stamens 

 10, free or connate at the base, all anther-bearing. Ovary 5-celled, 

 with a very short beak ; styles 5, distinct : stigmas terminal, capitate, 

 bifid. Ovules 1 - many in each cell. Capsule loculicidally dehiscing, 

 opening at the angles of the valves which remain adhei'ing to the 

 axis. — Herbs or rarely shrubs. Leaves radical or cauline, alternate, 

 digitately orpalmately 3 - many-foliolate, the leaflets entire or2-lobed. 

 Peduncles axillary or radical, 1-flowered, or often cymosely or umbel- 

 lately many-flowered. 



A large genus, chiefly American and Afi'ican, with a few Asiatic species. 



