136 HEXANDRIA — TRIGYNIA. [Triglochin. 



19. Aconus. Flowers arranged upon a spadix. Spatha 0. 

 Perianth of 6 pieces or scales, inferior. Stigma sessile. Cap- 

 sule indehiscent, many-seeded. — Nat. Ord. Aroide.e, Juss. — 

 Named from a, toithout, and zooiov, or xo^^, the pupil of the eye, 

 the diseases of which it Avas supposed to remove. 



**** Perianth single, itiferior, glumaceous. 



20. JuNCUS. Perianth inferior, of 6 leaves, glumaceous. 

 Caps. 3-celled, 3-valved ; valves with the seed-bearing dissepi- 

 merits in their middle. (^Leaves rigid, mostly rounded, rarely 

 plane, glabrous.) — Nat. Ord. JuTiiCEX, Juss. — Hamed from J ungo, 

 to Join ; the leaves and stems of this genus having been employ- 

 ed as cordage. 



21. LuzuLA. Perianth inferior, of 6 leaves, glumaceous. 

 Caps. 1-celled, 3-valved ; valves without dissepiments. Seeds 

 3, at the bottom of the cell. {Leaves soft, pla?ie, generally hairy). 

 — Nat. Ord. Junce^, Jicss. — Name : — the Gramen LuzidcB of 

 Bauhin. Lxizula, Smith tells us, is altered from lucciola, or hiz- 

 ziola, a glow-worm : because the heads of the flowers, wet with 

 dew, and sparkling by moonlight, gave the elegant Italians an 

 idea of those brilliant insects. Hence the learned author of the 

 English Flora contends for Luciola as the proper orthography. 



(See Pcplis in Ord. I. Polygonum in Cl. VIII.) 



ORD. II. DIGYNIA. 2 Styles. 



22. OxYRiA. Cal. of 2 leaves. Cor. of 2 petals, a little 

 larger than the cal. Nut triquetrous, with a broad membranous 

 margin. Embryo erect, inverted. — Nat. Ord. Polygone^, J^m. 

 — Named from o^v;, sharp or acid ; from the acid flavour of this, 

 as of many other plants belonging to the same natural family. 



ORD. III. TRIGYNIA. 3 Styles. 



23. RuMEx. Cal. of 3 leaves combined at the base. Cor. of 

 3 petals. Stiginas multifid. Nut triquetrous, covered by the 

 enlarged petals, which often bear tubercles. — Nat. Ord. Poly- 

 gone^, Juss. — Name of unknown origin. 



24. ToFiELDiA. Perianth single, 6-partite, having a small 

 S-partite involucre. Stamens glabrous. Caps. 3 — 6-celled ; cells 

 united at the base, many-seeded. — Nat. Ord. Melanthace^, 

 Br. — Named in honour of Mr Tojield, an English botanist. 



25. Scheuchzeria. Perianth single, petaloid, of 6 leaves. 

 Anthers elongated. Capsules 3, inflated, 2-valved, 1 — 2-seeded. 

 — Nat. Ord. Juncagine^, Rich. — Named in honour of the 3 

 Scheuchztrs, Swiss botanists. 



26. Triglochin. Perianth of 6, concave, deciduous leaves, 

 3 outer, and 3 inner. Anthers sessile, lodged in the leaves of 



f 



