MONIMIACEJiJ. 329 



GENERA. 



I. CALYCANTHE^. 



1. Calycanthus L. — Flowers hermaphrodite regular; receptacle 

 thick urceolate ; perianth -leaves oo, inserted in a spiral on outer 

 face and throat of receptacle ; outer leaves lowest, short bract-like 

 distant; superior sepaloid; inner leaves finally larger coloured 

 petaloid; aestivation imbricate. Stamens oc, inserted in a spiral 

 within the throat; outermost (10-15) fertile; filaments free; 

 anthers basifixed apiculate 2-celled extrorse dehiscing longitudi- 

 nally; inner sterile short. Carpels co, free inserted w^ithin 

 receptacular cavity ; ovary 1 -celled, tapering into a slender style 

 stigmatiferous at apex ; ovules 2, inserted at base of ventral angle, 

 finally superposed ascending; micropyle extrorse inferior; raphe 

 ventral ; one ovule finally abortive. Achenes (often subdrupaceous) 



00, included in herbaceous-subcarnose receptacle marked externally 

 and at apex with scars of fallen bracts ; throat surrounded by 

 thickened filaments of stamens ; apex finally open. Seeds solitary 

 erect, each surrounded by its pericarp ; embryo straight, cotyledons 

 broad leafy convolute ; albumen 0, or scanty central. — Aromatic 

 shrubs ; leaves opposite exstipulate ; fiower either axillary and solitary 

 or in small cymes, or terminal {North America). See p. 281. 



2. Chimonanthus Lindl. — Flowers of Cab/canfhns ; receptacle 

 less concave ; perianth-leaves oo ; innermost smaller, intermediate 

 larger, dissimilar in colour ; outermost very short scarious or dry 

 bract-like, imbricated in a spiral. Stamens fertile few (usually 5^ 6) ; 

 sterile internal, after anthesis growing thick, closing the throat 

 of the receptacle. Gyna3ceum, fruit and seeds of Calycantlim. — A 

 shrub ; leaves caducous ; flowers axillary appearing before the leaves. 

 Peduncles short covered with co decussate bracts similar to outer 

 perianth-leaves {Japan). See p. 285. 



II. HORTONIE/E. 



3. Hortonia Wight. — Flowers polygamous (of Chhuonanthis) ; 

 receptacle more or less deeply urceolate ; perianth-leaves co, inserted 



