ON SOUTH-AMEEICAN APOCYNACE^. 87 



pressuj glabra, ex una facie hilo central! peltatim aflSxa, marginibus membranaceis canaliculatim 

 introflexis ; albumen oblongunij compressum, parcum ; embryo hoterotropus ; radicula parva, supera, 

 teres, cotyledonibus 2 oblongis 4plo brevior. 



Frutices plerumque Brasiliani, dichotome ramosi ; folia opposita, breviter petiolata ; inflorescentia 

 breviter pedunculata ; flores plurimi, longe pedicellati, subfasciculati. 



1. Malottetia tamaquarina, a. DC. Prodr. viii. 378; Deless. Icon. v. p. 31, tab. 47; Miill. (in parte), 



Flor. Bras. fasc. xxvi. p. 92 : Cameraria tamaquarina, Aubl. PI. Guian. i. 360, tab. 102. In Guiana : 

 V. 8. in herb. Mus. Brit. Cayenne (Aublet), Guiana (Sagot 1143). 



This typical specimen is very different from the two Brazilian plants referred to the 

 same species by Dr. Miiller. The leaves have a rufescent hue, with immersed nerves 

 sulcate above, which are slender and prominulent below, with porous glands in 

 their axils. 



2. MalOuetia Guianensis, nob. : Malouetia tamarquarina, var. mimyr, A. DC. I. c. p. 379 : Cameraria 



Guianensis, Aubl. /. c. p. 262 : Cameraria lutea. Lam. Diet. i. p. 573. In Guiana : v. s. in herb. 

 Mus. Brit. Cayenne (Aublet). 



A species differing from the preceding in its much smaller leaves more acute at the 

 base, rarely with porous glands in the axUs of the nerves, in its much smaller flowers, the 

 corolla having a shorter tube. Its slender branches are shining black, and striated ; the 

 leaves are lanceolate-oblong, acute at the base, with a narrow, sublinear apex, very entire, 

 chartaceous, opakely green above, with slender subimmersed nerves, opake and rufously 

 brown below, with reddish nerves and midrib little prominent ; they are 3^ in. long, 

 1 in. broad, on slender, black, channelled petioles 2 lines long. 



3. Malouetia odorata, nob. : Tabermemontana odorata, Vabl, Eel. ii. p. 22 (excl. synon.) ; A. DC. 



/. c. p. 379 ; Benth. Lond. J'ourn. Bot. iii. 343. In Guiana : v. s. in herb. Mus. Brit. 

 (Schomb. 951). 



This species has dichotomous fuscous branches, compressed and channelled on each 

 edge; leaves lanceolate, with a narrow obtuse acumen, fuscous green above, with 

 immersed nerves, ferruginously opake below, with a darker prominulent midrib, and fine 

 nerves, each with a small porous gland in its axU, 2^5 in. long, 7-12 lines broad, on 

 petioles l|-3 lines long ; peduncle solitary in each node, bearing 3-4 flowers ; pedicels 

 1 in. long, dark and slender ; sepals lanceolate, 1 line long ; tube of corolla 8J lines 

 long ; segments oblong, 3 Hnes long, densely pubescent inside at their base. 



4. Malouetia Taeumbnsis, Benth. Lond. Journ. Bot. iii. 344. In Guiana : in Mont. Taruma (Schom- 



burgk) : nOn vidi. 

 A species near M. odorata. It is a tree 50-60 feet high, with dark, shining, dichoto- 

 mous branches compressed at the furcations ; leaves 5-7 in. long. It is called " hotitjou," 

 and yields an abundant milky juice. 



5. Malouetia gkacilis, A. DC. I. c. p. 380: Tabemeemontana gracilis, Benth. Journ. Bot. iii. 244. 



In Guiana: v. s. in herb, meo et alior. Upper Essequibo (Schomb. 39). 

 A species with straight striated branches and subdichotomous branchlets, its fuscous 



