Ordek 152.— SPIDERWORTS. 



301 



Analysis of the Genera, 



% Perianth greeuish outside, yellow inside. Stamens 6. 



Stigma 1. Seeds many. Leaves sword-shaped. 



Scape nearly naked. Nartliecium. Narthecium. 



§ Perianth green or brownish. Stamens 6. Stigmas 3. 



Capsule 3-celled, 3-sjeeded. Stems leafy, jointed. 



Leaves linear. Wood, Rush. Lu'zula. 



§ Perianth green or brownish. Stamens 6, rarely 3. 



Stigmas 3. Capsule many-seeded. Leaves terete, 



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



Fig. GC5. Flower of Luzula, much magnified: jp, the green peri- 

 anth ; *, the 6 stamens ; cc, the 3 stigmas. 



Order CLII. COMMELYNACE.E. Spiderworts. 



Herbs with flat, narrow leaves which are usually sheathing at base ; 

 •perianth of 2 circles, onter of 3 green sepals, inner of 3 colored j^e^aZs; 

 stamens 6, on the torus ; ovary 2 or 8-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. Commelt'xa. 



§ Flowers regular, clustered, floral leaf like the re.st. Spideiwort. Tkadescan'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 

 Pointed hairs. Juice viscid, spinning into cobwebs. 



S 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 bj-acts. Petals twice longer than sepals, rose-colored. Penn. S. 

 3T. pilo'sa. llainj S. Leaves lanceolate, long-pointed. Umbels both terminal and 



axillary, mauj^flj^wers. Petals small, bluish-purple. W. 

 i T. crassifo'lia. Thick-lv. S. Leaves ovate, some petiolate, acute, ■woolly beneath. 



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



f tOf C /rrr u^haKY 



