Monographia Juncacearum. 307 
Juncus 
Hel. Haenkeanae 1827, I, p. 143. C. S. Kunta, Enum. plant., 4841, III, 
p. 331. G. EwcELMANN, Revision, in: Transact. St. Louis Acad., 1868, II, 
p. 481. S. Warsow in: Un. Stat. Geol. Explor. of the fortieth Parallel, 1874, 
V, Botany, p. 358. G. EnGeLmann in: Un. Stat. Geol. Surv. West of the 
hundredth meridian, 1878, VI, p. 274. S. Warsow, botany of California, 
1880, II, p. 209. J. M. Courter, Manual bot. Rocky Mountain Region, 
1885, p. 359. 
Descr. Perennis, laxe caespitosus. Radices filiformes, diam, usque 4 mm, 
pallide fuscae, fibrosae, Rhizoma horizontale, perdurans, tenue vel crassum (diam. 
usque 4, raro 5 mm) internodiis distinctis. Caules erecti, vel adscendentes, 20 usque 
100 (cum inflorescentiá 420) cm alti, etiam superne foliati, ancipiti-compressi, alati (diam. 
latiore usque 5, raro 8 mm), laeves, medullä continuá parenchymatosá repleti, serius 
cavi. Folia basilaria infima cataphyllina, superne sensim in folia frondosa (caulina 3 
usque 5) transeuntia; vagina longa, laxa, dorso carinata, basi late, superne anguste 
membranaceo-marginata, apice vix unquam auriculata (auriculis, si adsunt, minimis); 
lamina ensiformis, ancipiti-compressa, pluritubulosa, usque fere 40 cmlonga, et 10 mm lata, 
caule brevior, laevis, recta vel curvata, septis incompletis, externe plerumque inconspicuis, 
superne sensim angustata, apice subulata. Inflorescentia erecta, terminalis, nunc supra- 
decomposita, anthelata, multicapitata, nunc composita, umbelloides, paucicapilata ; capitula 
hemisphaerica usque sphaerica, pauci- usque multiflora, diam, 7 usque 42 mm, viridius- 
cula, straminea, ferruginea vel castanea. Bractea infima (vel rarius 2 infimae) frondes- 
cens, inflorescentiä plerumque brevior, ceterae hypsophyllinae; bracteae florum lanceo- 
latae, acuminatae vel fere aristatae, hypsophyllinae, flore breviores. Flores 3 usque 
^ mm longi, plerumque distincte pedunculati, virides, straminei, rubescentes vel castanei. 
Tepala glumacea, aequilonga vel interna breviora, lanceolata, externa subulata, interna 
acuta (interdum obtusiuscula, sed ob margines involutos acuta), uninervia, viridiuscula, 
apice interdum rubescentia vel ferruginea vel castanea, interna membranaceo-marginata, 
Stamina 6 usque 3, tepalis 1/3 usque 1/, breviora; filamenta linearia, alba; antherae 
lineares, filamenta subaequantes. Pistillum exsertum ; ovarium trigonum, ovato-pris- 
maticum ` stilus perbrevis; stigmata longa, erecta. Fructus trigonus, ovato-prismaticus 
vel prismaticus, perigonium aequans vel paullo superans, apice subconicus, mucronatus, 
vel breviter rostratus, nitidus, apice castaneus vel ferrugineus, basi pallidus. Semina 
0,5 usque 0,6 mm longa, elongato-elliptica, elongato-obovata vel obovata, apiculata, 
ferruginea, apice fusca, rectangulariter reticulata, areis transversim lineolatis. 
Var. J. xiphioides E. M. var. littoralis EnGeLmann l. c., 1868, p. 484. 
Caules robusti, elati (usque 100 em alti). Folia lata, iridacea, vaginis ple- 
rumque inauriculatis. Inflorescentia magna, supradecomposita; capitula 
3- usque 20-flora, straminea usque stramineo-fusca. Tepala subaequilonga. 
Stamina 6. Fructus mucronatus vel breviter rostratus, perigonium paullo 
superans. Semina elongato-obovata vel elongato-elliptica. Zu dieser Varietät 
gehört die von Tuappivs HarxkE im Jahre 1794 bei Monterey an der Küste 
von Californien (36° 36’) gesammelte Pflanze, auf welche Ernst Mever die Art 
begründete. 
J. xiphioides E. M. var. auratus Engermann l. c., 1868, p. 481. Caules 
graciles, usque 100 cm alti. Folia lata, iridacea. Inflorescentia magna, 
supradecomposita; capitula 5- usque 20-flora, pallidiora, straminea vel 
rubescentia, nitida; tepala aequilonga, fructu breviora, Semina (teste 
ENGELMANN) ut supra. 
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