228 Fr. Buchenau, 
Juncus 
$ 16. 
(v. p. 208.) 
Inflorescentia pseudolateralis valde composita, anthelata, diffusa vel 
conglobata; bractea infima longa, elongationem caulis simulans. Fasciculi 
subepidermales liberi adsunt. Caules laeves vel sulcati, tenues. Flores 
parvi. Stamina 3. Fructus retusi, triloeulares. Semina parva, ecaudata. 
— J. effusus fere ubiquitaris, J. Leersi? subarctico -alpinus, J. uruguensis 
australi-americanus . . . . 4 s s e. Bier, 34—33. 
31. J. effusus C. Lixx£, Species plantarum, ed. I, 1753, I, p. 326 
(sensu strietiore: var. 9). Densissime caespitosus, viridis. Cataphylla ba- 
silaria fulva vel fusca, opaca, etiam supremum mucronato - aristatum. 
Caules et folia cauliformia mollia, laevia, in statu humido vix valleculata. 
Inflorescentia pseudo-lateralis, anthelata, diffusa, ramis plerumque tenuibus 
elongatis, plerumque pallida. Vagina bracteae infimäe angusta. Flores ca. 
2 mm longi. Tepala anguste lanceolata, acuta, late membranaceo- margi- 
nata. Stamina 3. Fructus perigonium subaequans, trigono-obovatus, re- 
tusus; basis styli abbreviata, foveolae insidens; pericarpium plerumque 
pallidum, viride sive ferrugineum. 
Litt. J. conglomeratus C. Lins& l. c. (pro parte). J. effusus J. D. Leens, 
flora herbornensis, 1789, p. 88. Fr. G. Tu. Rosrkovivs, de Junco, 1801, 
p. 10. J. bogotensis Hums., BoxrL. et Kuntu, Nova gen. et spec. plant. 1815, 
I, p. 235 (sec. specim. authenticum). J. communis E. M. A effusus E. Meyer, 
Junei Generis Monographiae Specimen, 1819, p. 20, et Synopsis Juneorum 
1822, p. 12. »J. laevis Ger. em. 39« teste S. Fr. Gray, A natur. arrang. of 
brit.plants, 1824, II, p. 164. J. laevis 8 effusus Fr. G. Warrnorm, Schedulae 
criticae, 1822, I, p. 442. J. pe Lanarpe, Monographie, 1825, p. 145. J. Pylaeı 
Lananpe ibid. p. 119 (teste spec. authent. in herb. Candolleano a La PvraiE 
collecto). H. D. Horre, über die Zahl der Staubgefäße von J. conglomeratus 
und effusus L., in Flora 1826, 1, p. 65. C. Kern, Enum. plant., 1844, III, 
p. 320. J. aemulans F. Lieman, Mexicos Juncaceer, in: Vidensk. Meddel- 
elser Nat. Forening Kjóbenhavn, 1850, p. 38 (ad. var. brunneum spectat, 
v. Fr. Bucnenau, in: Abh. Nat. Ver. Brem., 1873, II, p. 340.) 
Descr. Perennis, densissime caespitosus, viridis. Radices fuscae, teretes; 
diam. 0,5—1 mm, subfibrosae. Rhizoma horizontale, internodiis brevissimis. caules 
confertos emittens. Caules erecti, teretes, molles, laeves (in statu sicco subvalleculati) 
plerumque nitidi, basi tantum foliati, scapiformes, 30—120 cm longi, diam. 0,5—4 mm, 
medullä continuä asterisciformi repleti. Folia basilaria cataphyllina, vaginantia, opaca, 
fusca, ferruginea vel fulva; supremum eorum 5—45 (raro 20) cm longum, mucronato- 
aristatum; folium unicum frondosum turionis sterilis cauliforme, teres, caule brevius. 
Inflorescentia pseudolateralis, supradecomposita, anthelata, plerumque effusa (inter- 
nodiis ramorum plus minus elongatis), rarius conglomerata (internodiis brevibus). 
Bractea infima erecta, cauliformis, elongationem caulis simulans, caule brevior 
(ca. 10—25 cm longa), subulata, vaginä anguslá; bracteae sequentes hypsophyllinae ; 
prophylla floris late ovata, aculala, fere toto scariosa, ffore pluries breviora. Flores 
2 usque 2,5 mm longi, plerumque pallidi. Tepala glumacea, lanceolata, acutata, ple- 
