Order 152.— SPIDERWORTS. 



3"?3 



is of the Genera. 



Perianth greenish outside, yellow inside. Stamens 6. 



Stigma 1. Seeds many. Leaves sword-shaped. 



Scape nearly naked. Narthecium. Nartheciom. 



J'crianth green or brownish. Stamens 6. Stigmas 3. 



Capsule 3-celled, 8-seeded. Stems leafy, jointed. 



Lea/es linear. Wood Rush. Ld'zula. 



Perianth green or brownish. Stamens 6, rarely 3. 



Stifl^mas 3. Capsule many-seeded. Leaves terete, 



or linear, or none. Hush. Bullrush. Jun'cus. 



Fig. 665. Flower of Luzula, much magni 

 anth ; s, the 6 stamens ; x, the 3 stigmas. 



p, the green peri- 



Order CLII. COMMELYNACEJE. Spiderworts. 



Hei-bs with flat, narrow leaves which are usually sheathing at base ; 

 perianth of 2 circles, outer of 3 green sepals, inner of 3 colored 2yetals; 

 stamens 6, on the torus ; ovary 2 or 3-celled ; style and stigma 1 ; 

 capsule 2 or 3-celled, with few seeds. 



Analysis of the Genera. 



§ Flowers irregular, clustered in a heart-shaped floral leaf. CommelV'na. 



§ Flowers regular, chistered, floral leaf like the rest. Spiderwort. Tradesoan'tia. 1 

 § Flowers regular, solitary, axillary. Stamens 3. Moss-like herbs. S. Maya'ca. 



TRADESOAN'TIA. Spiderwort. 



Flowers regular, in terminal, close umbels, subtended by 2 or 3 leaf-like 

 bracts. Petals broad, larger than the sepals. Filaments clothed with 

 'ointed hairs. Juice viscid, spinning into cobwebs. 



§ Leaves linear, sessile, not narrowed at the base, smooth 1, 2 



§ Leaves ovate or lanceolate, narrowed at base, hairy 3, 4 



1 T. Virgin'ica. Common S. Leaves broad^linear. Umbel many-flowered, ses- 



sile, terminal, with 2 leaf-like bracts. Petals large, blue or white. 



2 T. ro^sea. Roseate S. Leaves linear, long. Umbel few-flowered, with 2 sub- 



ulate bjacts. Petals twice longer than sepals, rose-colored. Penn. S. 

 T.pilo'sa. Hairy S. Leaves lanceolate, long-pointed. Umbels both terminal .im.: 

 a.illnry, maaj-flowers. Petals small, bluisli-purple. W. 

 t T. crassifo'lia. Thkk-lv. S. Leaves ovate, some petiolate. acute, woolly be c. ., 

 Flowers small, rose-purple, terminal. Stem weak. Leaves striped, t 



