492 juNCACE^. (rush family.) 



§ 1. ToFiELDiA proper. Racemes simple, the flowers successively opening from 

 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 sliglitly exsertcd ; styles very short. 

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

 tricts of Nortii and South Carolina. Oct. — Stem 1° - 2° high. Raceme 2' - 4' 

 long. Flowers white. 



§ 2. Triantha. Racemes compound; the flowers successiveli/ opening from the 

 apex dowmvard (centrifugal) : anthers innate: seeds with tad-like appendages 

 at each end. — Pubescent herbs. 



2. T. pubens. Ait. Stem and pedicels rough-puberiilent ; 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° 

 - 1 h° high. Leaves 6' - 1 2' long. 



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

 short, linear-sword-shaped; racemes (1' 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 1°-U° high. 

 Leaves 4' - 6' long. 



Order 153. JUNCACE^. (Rush Family.) 



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

 terete leaves, and regular cymose-clustered or panieled 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 - many-ovuled. 

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

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



Synopsis. 



1. LXJZULA. Capsule 1-celled, 3-seeded. Leaves mostly hairj-. 



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



herbs, with alternate leaves. 



3. CEPHALOXYS. Capsule many-seeded ; the placentae united into a 3-wingcd central col- 



umn. Stem-leaves nearly opposite. 



1. LUZITLA, DC. Wood-Rush. 



Sepals flat. Stamens 6. Style very short; stigmas filifoi-m, 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. 



