'>()2 KKlOCAULONACEii:. (I'lrKWUUT 1-AMII.V.) 



tumid and dark lnowii at tlie base. Sjiikcs I' iVloii;^. Totuls 9" long, ex- 

 punding at midday. 



* * * Sterile Jihiwcnls beardless : haccs jUiJ'orm. 

 ir>. X. tenuifolia, n. sp. Smooth ; scape slender, terete or 1-nnglcd ; leaves 

 filiform or liristk-like, tomjjresscd ; spikes ovoid, few-flowered ; lateral sepals 

 laneeolatc, the narrowly winjjjed keel out-seiTate ; petals ohovate ; seeds linear- 

 ohlonfj, smooth. — Open grassy ])inc-harrcn swaini)S, Florida to North Carolina. 

 July - Sept. — Seapes clustered, 10'- 12' liigh. Leaves 4'- 6' long. Spikes 

 2"- 4" long. Petals 3" long. 



16. X. Baldwiniana, R. & S. (X juncca, ZiaWa-.) "Root perennial; 

 scnpc terete, shcatlicd at the base, 6' -12' high ; leaves 4' -8' long, terete, hol- 

 low, acute ; head oval ; bracts nearly round ; calyx about as long as the bracts, 

 the keel slightly toothed, filaments naked." DuUhrin in Ell. — Damp pine bar- 

 rens, near St. Mary's, Georgia. May and June. ( » ) 



Order 158. ERIOCAULOXACEiE. (Pipewort Family.) 



Perennial chiefly stemlcss marsh herbs, ■with narrow tufted leaves, and 

 minute monoicious or dia'cious flowers, collected in a dense hairy chafi'y- 

 bracted head. — <S/f/;?i. FL Sepals 2-3. Corolla tubular, bilabiate or 

 3-toothed, or sometimes wanting. Stamens 2 - 6 : anthers introrse. — 

 Pist. FL Sepals and petals 2-3. Ovary 2 - 3-celU'(l, with a single 

 orthotropous ovule in each cell. Style 2 - 3-partcd. Capsule loculici- 

 dally 2 - 3-valved, 1 - 3-seeded. Embryo minute at the apex of the 

 albumen. — Leaves concave and ])artly clasping at the base. Scape 

 furrowed and commonly twisted, with a spathe-like sheath at the base. 

 Exterior scales broader, empty, and involucrate. Flowers fringed with 

 white club-shaped hairs. Corolla white. 



Synopsis. 



1. ERIOC.\ULON. Stamens 4. Anthers 2-celIed. Style 2-partcd. Corolla 2-lipped. 



2. P-T'IPALAXTIIUS. Stamens 3 Anthers 2-cclled. Stjle 3-parted, the lobes entire. 



3. LACHXOCAULON. Stamens 3. Anthers 1-celled. St>le 2 -3-parted, the lobes entire, or 



2-cleft. 



1. ERIOCAULON, L. Piiewort. 



Flowers monoecious, each in the axil of a scale-like bract. Sepals 2-3. Co- 

 rolla of the staminate flowers tubular, 2-lipped or 3-lobed ; of the pistillate 

 flowers 2-3-petalous. Stamens 4 or 6 : anthers 2-celled. Style 2 -3-partcd: 

 stigmas 2-3. Capsule 2- 3-celled, 1 -3-seeded. — Scapes single or numerous, 

 mostly from a short and villous rootstock. Lobes of the corolla furnished with 

 a blackish irland on the inner face, commonly bearded with cliib-shaped hairs. — 

 The following species are all tetrandrous, with a 2-parted style and a 2-celled 

 capsule. 



