69. Liliaceous Plants. Liliace‡

* Stem leafy and branching.

(286) Asparagus - perianth bell-shaped, tubular below; stamens six; stigmas three, reflexed; flowers by abortion, dioecious.

** Stem leafy and simple, or leafless. †Rootstock not bulbous. ‡ Flowers purplish.

(287) Simethis - perianth-leaves spreading, deciduous; filaments bearded; flowers panicled.

‡‡ Flowers yellow.

(288) Narthecium - perianth-leaves persistent; filaments bearded; flowers racemose.

(289) Tofleldia - perianth-leaves persistent; flowers in short spikes.

‡‡ Bootstock bulbous.

(290) Allium - perianth-leaves rather spreading; flowers umbellate.

70. Alismaceous Plants. Alismaceae

(291) Butomus - perianth coloured, resembling a corolla; stamens nine.

* Perianth-segments six, large, coloured, nearly equal.

** Perianth-segments three large coloured, and three small herbaceous.

(292) Alisma - flowers perfect; calycine and corolline segments three each; stamens six; carpels numerous, one-seeded.

(293) Actinocarpus - flowers perfect; calycine and corolline segments three each; stamens six; carpels 6-8, spreading in a radiant manner, two-seeded.

(294) Sagittaria - flowers monoecious; male flowers with numerous stamens; female flowers with numerous one-seeded compressed carpels upon a globose receptacle.

** Perianth-segments all small, and but slightly coloured.

(295) Triglochin - perianth of deciduous leaves; stamens six; carpels attached to an angular axis from which they at length separate at the base.

71. Juncaceous Plants. Juncaceae

(296) Juncus - perianth glumaceous, six-leaved; capsules threecelled, three-valved.

(297) Luzula - as in Juncus, but the capsules one-celled, threevalved.

72. Cyperaceous Plants. Cyperaceae

* Flowers unisexual, the stamens and ovaries within separate glumes.

(298) Carex - flowers in imbricated spikes, each covered by a glume; ovaries enclosed in bottle-shaped utricles formed of the persistent perigones.

** Flowers perfect, the stamens and ovaries within the same glume.

† Glumes or bracts distichous or two-ranked.

(299) Schcenus - spikelets 2-4-flowered; glumes 6-9, the lower ones smaller, empty.

†† Glumes or bracts regularly imbricated.

‡ Lower glumes empty or larger than the fertile ones, sometimes all fertile.

§ Bristles not so long as the glumes, or wanting.

(300) Blysmus - bristles 3-6; nut plano-convex, tipped with the base of the style, which is not dilated; spikelets in two-ranked spikes.

(301) Eleocharis - bristles 3-6;'nut compressed, crowned with the persistent dilated base of the style; spikelets solitary.

(302) Scirpus - bristles about six or none; nut plano-convex or trigonous, tipped with the filiform base of the style, which is not dilated; spikelets solitary clustered or panicled.

§§ Bristles at length much longer than the glumes.

(303) Eriophorum - bristles (in the fruiting state) silky; nut trigonous; spikelets solitary or umbellate.

‡‡ Lower glumes empty, or smaller than the fertile ones.

(304) Rhynchospora - bristles about six; nut compressed, convex on both sides, crowned with the dilated base of the style.