Monographia Juncacearum. ` 331 
Juncus 
mina 3. Stilus brevissimus. Fructus plus minus prismaticus, perigonium 
superans. Plantae americanae. 
1. Flores saepe rubescentes vel ferruginei. Fructus late trigono-ovatus, 
obtusissimus, vix mucronatus, saepe castaneus. Semina 0,5 usque 
0,55 mm longa, angusto- vel fusiformi-ovata, apiculata, intense ferru- 
ginea, reticulata, areis laevibus. America borealis. 
85. J. Elliottii Chapm. 
2. Flores plerumque virides, rarius subrubescentes. Fructus trigonus 
vel triqueter, ovato-prismaticus vel saepius prismaticus, mucronatus 
vel mutieus, stramineus, vitellinus vel ferrugineus. Semina 0,3 us- 
que 0,4 mm longa, obovata vel fusiformi-obovata, brevissime apicu- 
lata, vitellina vel ferrugineo-vitellina, reticulata, areis subtilissime 
lineolatis. America borealis et centralis . . 86. J. acuminatus Mehx. 
Species dubia chilensis: J. multiceps Kze. 
V. etiam J. prismatocarpum R. B. var. Leschenaultit var. unitubulosum 
Fn. B., plantam orientali-asiaticam. 
85. J. Elliottii A. W. Cnuaruaw, Flora of the southern United States, 
1865, p. 494. Caules erecti, 30 usque 50 em alti. Folia caule breviora, 
unitubulosa ; septa completa, externe manifesta. Inflorescentia decomposita, 
anthelata; capitula numerosa, hemisphaerica, 3- usque 9-flora. Flores ca. 
3 mm longi. Tepala aequilonga, ovato-lanceolata, acutissima, saepe rubes- 
centia vel ferruginea. Stamina 3, tepalis breviora; antherae filamenta 
aequantes. Fructus perigonium superans, late trigono-ovatus, obtusissimus, 
vix mucronatus, plerumque castaneus. Semina 0,5 usque 0,55 mm longa. 
Litt. J. acuminatus Sr. Eruiort, A Sketch of the botany of South- 
Carolina and Georgia, 1816—24, I, p. 408. G. EnGELManNN, Revision, in: 
Transact. St. Louis Acad., 1868, II, p. 462. 
Descr. Perennis, subcaespitosus, Radices capillares vel filiformes, diam. 
usque 0,25 mm, pallide fuscae, subfibrosae. Rhizoma brevissimum, vix distinctum, 
pluriceps. Caules erecti, stricti, usque inflorescentiam 30 usque 50 cm alti, diam. 2 
usque 3,5 mm, etiam superne foliati, teretes, laeves, medullä continuä parenchymatosä 
repleti, serius cavi, Folia basilaria infima cataphyllina, rufescentia, usque ca. 3,5 cm 
longa, sequentia 4—2 et caulina 4 vel 2 frondosa, caule multo breviora; vagina longa, 
saepe laxiuscula, superne in auriculas duas magnas oblongas producta; lamina plerumque 
tenuis, diam, 14, rarius usque 2 mm, teres vel subcompressa, unitubulosa, septis com- 
pletis, externe manifestis intercepta, apice acuta. Inflorescentia erecta, decomposita, 
anthelata, ramis plerumque oblique erectis; capitula numerosa (12—50) discreta, hemi- 
sphaerica, diam. ca. 5 mm, 3- usque 9-flora, interdum punctionibus insecti in fasciculos 
magnos foliorum excrescentia. Bracteae hypsophyllinae, infiorescentiä multo bre- 
viores; bracteae florum late lanceolatae, brevissime mucronato -aristatae, fere toto 
hyalinae, flore plus quam duplo breviores. Flores ca. 3 mm longi. Tepala glumacea, 
aequilonga, ovato-lanceolata, acutissima, uninervia, initio viridia, serius saepe rubes- 
centia sive ferruginea, membranaceo-marginata. Stamina tria, tepalis ca. 1/3 breviora; 
filamenta linearia albida; antherae oblongo-lineares, flavidae, filamenta aequantes. 
Pistillum...... Fructus perigonium superans, late trigono-ovatus, obtusissimus, 
vix mucronatus, faciebus p'anis; pericarpium firmius, nitidum, plerumque casianeum 
