FLORA OF THE HAWAIIAN ISLANDS. 169 



cymosely few-flowered. Calyx tomentulose, sepals broadly ovate, 

 acute, 1" long, i as long as the ovate tomentulose petals. Follicles 

 •ovoid, cinereous-tomentose, 5" long, turgid, coriaceous, 2-valved, 

 Seeds 1 or 2. 



Kaala Mountains, in Waiauae, Oahu. Woods above Makawao, East Maui. 



3. PLATYDESMA H. Mann. 



Flowers hermaplirodite. Sepals 4, distinct, persistent, strongly 

 Imbricated, rotund, the lai'ger exterior ones including the others in 

 the bud. Petals 4, in sestivatiou broadly convolute-imbricate or con- 

 volute, large and obovate, with recurved apexes. Disk plane, slightly 

 4-lobed. Stamens 8, inserted on the disk, monadelphous below the 

 middle ; filaments naked, ovate-lanceolate, thick : anthers sagittate, 

 adnate to the interior face of the filaments. Ovary 4-pai'ted ; style 

 central; stigma 4-lobe-d. Ovules 5 in each cell, amphitropous. Cocci 

 erect, entirely distinct, or only united by the central style, cartilagi- 

 nous, by abortion usually 2-seeded. — A small tree, with a heavy odor 

 when bruised. Leaves opposite, simple, lanceolate or obovate-lanceo* 

 late, obtuse or acuminate, petioled. Cymes axillary, few-flowered : 

 pedicels bibracteolate. Flowers large, white. 



Genus of one species, peculiar to the Hawaiian Islands. 



1. P. CAMPANULATA iZ". i)/a?i)i. (Enum. JVo. 79.) Leaves 3' -14' 

 long, l'-5' wide, coriaceous, pinnately-veined, not strongly reticu- 

 lated. Peduncles and petioles ^'-2' long. Sepals 4" -5" long. Petals 

 8" - 9" long. Capsule h' in diameter, enclosed by the persistent cup- 

 shaped calyx. 



Mountains behind Honolulu, at middle heights. 



4. ZANTHOXYLUM Golden. 



Flowers polygamous. Calyx 3-5 cleft, imbricated, rarely obsolete. 

 Petals 2 - 5, rarely none, imbricated or valvate. Male flowers: Disk 

 inconspicuous. Stamens 3-5, hypogynous. Ovary more or less rudi- 

 mentary. Female flowers : Stamens none, or mere scales. Disk very 

 short. Carpels 1-5, oblique, 1-celled: styles somewhat eccentrical, 

 short or elongated, free or connate above : stigmas capitate. Ovules 2 

 in each cell. Cocci 1-5, dry or drupaceous, obovoid, usually 2-valved, 

 1-seeded, the eudocarp separating or adnate. Seeds much as in Pelea, 

 black and shining. Embryo in the axis of fleshy albumen, straight or 

 curved ; cotyledons plane and foliaceous ; radicle very short. — Trees 

 or shrubs, unarmed or armed with recurved prickles. Leaves alter- 

 nate, usually imparl -pinnate, rarely 1 - 3-foliolate. Cyme usually pani- 

 culate, axillary or terminal, sometimes crowded. 



A considerable genus, throughout the tropical and hot i-egious of the globe. 

 COMMU:{{ICATIONS ESSEX INST., VOL. V. 23 OCT., 1867. 



