492 JUNCACE^E. (RUSH FAMILY.) 



$ 1. TOFIELDIA proper. Racemes simple, the flowers successively opening fron 

 the base upward (centripetal) : anthers introrse : seeds without appendages. 

 Smooth herbs. 



1. T. glabra, Nutt. Stem leafy at the base, and sparingly above ; leaves 

 linear ; racemes densely flowered ; stamens slightly exserted ; styles very short. 

 ( T. glaberrima, Macbride. ) Low pine barrens, in the middle and lower dis- 

 tricts of North and South Carolina. Oct. Stem 1 - 2 high. Raceme 2'- 4' 

 long. Flowers white. 



2. TRIANTHA. Racemes compound; the flowers successively opening from the 

 apex downward (centrifugal) : anthers innate : seeds with tail-like appendages 

 at each end. Pubescent herbs. 



2. T. pubens, Ait. Stem and pedicels rough-puberulent ; leaves long, 

 linear; racemes (3' -6' long) loosely flowered; pedicels mostly three in a clus- 

 ter, longer than the greenish-white flowers ; capsule as long as the perianth. 

 Low pine barrens, Florida to North Carolina, and westward. Sept. Stem 1 

 - li high. Leaves 6' - 12' long. 



3. T. glutinosa, Willd. Stem and pedicels clammy-pubescent; leaves 

 short, linear-sword-shaped ; racemes (!' long) dense-flowered , pedicels 3 - 5 in a 

 cluster, shorter than the yellowish flowers ; capsule longer than the perianth. 

 Mountains of North Carolina, and northward. June. Stem l-l high. 

 Leaves 4' - 6' long. 



ORDER 153. JUNCACE^E. (Rusn FAMILY.) 



Tough grass-like herbs, with naked or leafy and jointed stems, flat or 

 terete leaves, and regular cymose-clustered or panicled flowers. Peri- 

 anth of six nearly equal calyx-like persistent divisions. Stamens 3 or 6, 

 inserted on the base of the sepals : anthers 2-celled, introrse, fixed at 

 the base. Ovary free from the perianth, 1-3-celled, 3 - inany-ovuled. 

 Style single : stigmas commonly 3, hairy. Capsule loculicidally 3-valved. 

 Seeds anatropous. Embryo minute at the base of the albumen. 



Synopsis. 



1. LUZULA. Capsule 1-celled, 3-seeded. Leaves mostly hairy. 



2. JUNCUS. Capsule many -seeded ; the placentae separating with the partitions. Smooth 



herbs, with alternate leaves. 



3. CEPHALOXYS. Capsule many-seeded ; the placentas united into a 3-winged central col- 



umn. Stem-leaves nearly opposite. 



1. LUZULA, DC. WOOD-RUSH. 



Sepals flat. Stamens 6. Style very short: stigmas filiform, villous. Cap- 

 sule 1-celled, 3-valved, 3-seeded. Seeds erect from the base of the cell. Peren- 

 nial herbs, with flat mostly hairy leaves, and umbellate or spiked flowers. 



