252 OCTANDRIA. MONOGYI^IA. 



Species. 1. M./<?rrt/^m<?a. In North California. %gl(}bu- 

 lavis? Obs. Brandies subverticillate. Leaves obovate-lan- 

 ceolate, acute, petioles and margin as well as the younger 

 branches pilose, under side of the leaf glaucous, covered 

 with a minute pubescence, upper side sometvhat scabrous; 

 under side of the midrib lined with about eight to ten 

 distant tubercles, each terminated by an appressed pa- 

 leaceous process, and respectively situated near the base 

 of each pair of lateral nerves. Flowers terminally fas- 

 ciculated, peduncles glandularly pubescent, an inch and 

 a half long. Calix crenate, minute, crenatures 4, ciliate, 

 retuse. Capsule cylindric-ovate, short, 4-valved, coria- 

 ceous, receptacle with 4 alated angles, each angle semi- 

 niferous and embraced by the 2 inflected margins of each 

 valve. Seeds minute, linear-oblong, acute. 3. empetnfor- 

 7ms. 4. citnilea. These 2 last resemble Erica. No. 4. 

 was the Erica carulea of Willdenow. — There is but an- 

 other genuine species of this genus, which is the J\l. poli- 

 folia of Jussieu, in the north of Europe, almost peculiar to 

 the mountains of the west of Ireland, extending also into 

 France and Portugal. 



366. ACER. L. (Maple.) 



Flowers mostly polygamous. — Calix about 5- 

 cleft. Petals 5, or none. Samane 2, sometimes 

 S, alated, united at the base, by abortion 1- 

 seeded. 



Large or small trees ^ leaves palmately lobed (in v-?. 

 JS'egundo, simply or doubly pseudo ternate); flowers lateral 

 and terminal, subcorymbose, racemose, or aggregate, and 

 then subtended by an imbricated gemmaceous involucrum, 

 with the pcdicells 1-flowered. Calix sometimes petaloid. 



Species. 1. A. rubrum. Ons. Dioicous; culix peialold 

 red, 8 to 12 parted; stamens about 5, in the male exsert- 

 ed, having a globular gland at the base of each; segments 

 of the hermaphrodite calix shorter and broader, stamens 

 also shorter. Styles 2, long, recurved and pubescent on 

 the upper surface. Flowers aggregated in 5s, surrounded 

 by a gemmaceous involucrum. 2. dasycarpum. Obs. Dioi- 

 cous; hermaphrodite calix membranaceous, nearly entire, 

 or with 5 crenatures; petals none; stamina mostly 5, rarely 

 4 or 6. Germ lanuginous, 4-seeded; no glands at tJie base 

 of the corolla or germ, as in A. mbrimi; gemmaceous clus- 

 ters about 5-flowered, internal base of the involucrum 

 woolly. Hab. Westward into Upper Louisiana. — These 

 2, and several otiiers, are scarcely congeners with the 



