ADDENDA. 
ORDER CX[LITa. MAYACEAS. (By N. E. Brown.) 
Flowers regular, hermaphrodite. Calyx infericr; sepals 3, her- 
baceous, narrowly imbricate in the bud, persistent. Petals 3, hypogy- 
nous, obovate or suborbicular. Stamens 3, hypogynous, free; filaments 
short ; anthers erect, basifixed, subtetragonal, 4-celled, opening by a 
terminal pore or by a short apical tube. Ovary superior, 1-celled, with 
3 parietal placentas; style filiform, stigma entire; ovules numerous, 
orthotropous. Capsule 3-valved ; valves placentiferous down the middle. 
Seeds numerous, ovoid or globose, with a basal hilum and terminated by 
a small tubercle, striate, often rugulose or pitted ; albumen farinaceous?; 
embryo minute, very shortly and broadly conical or sublenticular, 
seated at the apex of the albumen.—Small herbs, somewhat moss-like, 
growing in wet places or in slowly running streams. Stems densely 
covered with linear or filiform leaves. Flowers solitary in the axils of 
the leaves, 1-3 to a branch, or several clustered at the apex of the stem, 
on long peduncles. 
A small monotypic order of about 8 species, all natives of America with the 
exception of the following, which has recently been discovered in Angola. 
1, MAYACA, Aubl.; Benth, et Hook. f. Gen. PI. iii. 843. 
Characters as for the Order. 
1. M. Baumii, Giirke in Engl. Jahrb. xxxi., Beibl. 69,1. Stem 
growing to a en it of 20 in. Leaves 6-7 lin. long g, $ lin. broad, sessile, 
linear-subulate, 2-toothed at the apex. Peduncles 2-3, umbellately 
clustered near ‘the apex of the stem, bent downwards after flowering, 
3-1 in. long. Sepals 3-34 lin. long, lanceolate, obtuse. Petals 4—5 
fin, long and about as broad, obovate- suborbicular. Stamens 3; fila- 
ments } lin. long; anthers $ lin. long, cup-shaped, opening by an apical 
pore, in the young state covered by a callous dome-shaped operculum. 
Style simple ; stigma entire, truncate. 
Lower Guinea. Angola; Benguela; in the River Quiriri, near Sakkemecho, 
3900 ft., Baum, 811. 
