418 JUNGE&. [Juxcus. 



Sub-sp. J. SUPI'NUS, Mcench', rootstock sometimes tuberous, stems terete 

 3-10 in. often floating with flaccid straggling branches, joints very obscure, 

 leaves slender, cymes terminal, branches few long suberect, bracts scarious 

 acute sometimes equalling the flower, perianth-segments acute equalling the 

 ovpid obtuse mucronate capsule, stamens 3. Ascends to 3,500 ft. VAR. J. 

 uligino'sus, Sibth ; erect. VAR. J. subverticilla'tus, Wulf. ; decumbent or 

 floating. 



Sub-sp. J. LAMPROCAR'PUS, Ehrh.; stem slightly compressed stout or slender, 

 and leaves evidently septate when dry, cyme terminal, branches long sub- 

 erect, perianth-segments shorter than the narrow beaked glossy capsule, inner 

 obtuse, stamens 6. Ascends to 2,400 ft. in the Highlands ; also found in 

 N. America. Of J. niyritel'lus, D. Don (not Koch), of the Clova Mts., 

 nothing satisfactory is known; garden specimens from Don himself in 

 Borrer's Herbarium have compressed stems, and seem to be lamprocarpus. 



SECTION 3. Annual. Stem hollow, septate within or not. Testa not 

 produced. 



16. J. bnfo'nius, L. ; very pale, stems slender septate, upper part or 

 cyme dichotomously branched, perianth-segments lanceolate much longer 

 than the obtuse mucronate capsule, stamens 3 or 6. 



Moist places, N. to Shetland ; ascends to near 2,000 ft. in the Lake District ; 

 Ireland; Channel Islands; fl. June- Aug. Very variable, densely aggre- 

 gated, from the seedlings growing in masses. Stem 1-8 in., erect or 

 ascending. Leaves few, setaceous, channelled above, not jointed, pale green, 

 very narrow, sheaths short. Cyme occupying most of the stem ; branches 

 short or long, often flexuous ; flowers - in., solitary and distant, or in 

 clusters of 2-4, lateral open and hexandrous, terminal cleistogamous and 

 3-androus ; bracts small, scarious, obtuse. Flowers usually secund, pale 

 green. Perianth-segments very unequal, long-acuminate, sometimes much 

 longer than the pale obovoid capsule. DISTRIB. Europe, N. Africa, N. Asia, 

 Himalaya, N. America, N. Zealand. 



17. J. capita'tus, Weigel ; stems setaceous grooved not septate, heads 

 terminal bracteate, perianth -segments elliptic-ovate acuminate awned 

 longer than the broadly ovoid mucronate capsule, stamens 3. 



Sands inundated in winter, "W. Cornwall, Channel Islands ; fl. May- July. 

 Very small, 1-4 in., tufted, reddish when dry. Stems strict. Leaves all 

 radical, short, setaceous, channelled ; sheaths short. Heads solitary, rarely 

 2-3, 2-6-fld ; outer bracts setaceous, about twice as long as the flowers, 

 inner smaller, broadly ovate, aristate. Perianth f in., pale, tips recurved. 

 DISTRIB. Europe, N. Africa. 



18. J. pygmse'us, Rich. ; stems slender terete not septate, flowers few 

 bracteate, perianth-segments linear-lanceolate acuminate not awned longer 

 than the narrow acute capsule, stamens 3 or 6. 



Damp places, Lizard and Kynance Downs ; fl. May-June. Very small, 1-2 

 in., tufted, pink when dry. Stem simple or once branched. Leaves, radi- 

 cal setaceous faintly jointed channelled, cauline solitary base auricled. 

 Flowers 1-5, subsessile ; bracts ovate. Perianth^ in., segments membranous 

 3-nerved, with hyaline margins. Anther shorter than the filament. Capsule 



