|7§ Fr- Buchenau. — Juncaceae. 



anthelata; rami elongati, erecto-patentes ; bractea infima frondescens, brevis. Flores 

 ca. 3,3, cum fructu usque 4,7 mm longi, angusti; tepala lineari-lanceolata, subulata, 

 aequilonga vel interna paullo longiora ; stamina 6 ; antherae filamentis longiores. Fructus 

 perigonium (interdum conspicue) superans, triquetro-prismaticus, sensim in rostrum 

 longum attenuatus; semina ca. 0,5 mm longa, obovata, apiculata, pallide ferruginea, 

 rectangulariter reticulata. 



Provinz der pacifischen Goniferen: Auf feuchten Wiesen in Kalifornien und 

 Oregon. 



Nota. J. oxymeris affinis est J. dubio (californico), sed differt rhizomate tenuiore, saepe 

 fere stoloniformi, caule magis compresso, saepe ancipite, auriculis deficientibus, foliis ensiformi- 

 bus, imperfecte septatis, floribus angustioribus, fructibus longioribus et angustioribus, denique 

 areis laevibus seminum. 



87. J. polycephalus Michx. Fl. bor. amer. I. (1803) 192 (var. a. crassifolius 

 Michx. 1. c. t. Coville in Bull. Torr. Bot. Club XXII. [1895] 305. — J. nodosus var. 

 polycephalus Pers. Syn. pl. I. (1805) 3 84. — J. echinatus Mühlenb. Catal. (1813) 36 

 et Descr. über. gram. etc. Amer. bor. (1817) 207 pr. pte. — J. polycephalus var. y. 

 [J. crassifolius Bosc in sched. *)) Laharpe, Monogr. Joneees (1827) 140. ■ — /. scir- 

 poides Lam. var. polycephalus B. minor Engelm. in Trans. St. Louis Acad. II. (1868) 

 468. — J. Engelmanni Buchenau, Krit. Verz. aller . . . Juncac. (1880) 67 u. Monogr. 

 Juncac. (1890) 301. Coville in Contrib. Un. St. Nat. Herb. II. (189 4) 447; Britt. and 

 Brown, 111. Fl. N. Un. St. I. (1896) 393 f. 951; Chapm. Fl. South. Un. St. 3. ed. (1897) 

 521; Small, Fl. Southeast. Un. St. (1903) 259. ■ — Bhizoma horizontale, internodiis 

 distinctis. Caules erecti, rigidi, usque ad inflorescentiam 90 usque 120 cm alti, valde 

 compressi (diam. majore usque 7 mm), cavi, septis incompletis intercepti. Auriculae in 

 foliis frondosis desunt, in bractea infima parvae adsunt; lamina ensiformis, usque 70 cm 

 longa, usque fere 1 mm lata (t. Coville folia angustiora interdum septis completis). 

 Inflorescentia maxima (usque 30 cm longa et 2 4 cm lata), supradecomposita, anthelata, 

 diffusa; rami elongati, graciles, primani erecti, sequentes squarroso-distantes. Capitula 

 numerosa (diam. 8 usque 1 1 mm), 20- usque 30-flora, echinata. Flores 3,5, cum fructu 

 usque 5 mm longi, angusti, virides vel rubescentes; tepala aequilonga, lineari-lanceo- 

 lata; stamina 3; antherae longae, filamentis paullo breviores. Fructus triqueter, angustus, 

 e basi ovata prismatico-pyramidatus, longe rostratus, perigonium dimidio superans; 

 valvulae apice cohaerentes; semina 0,5 usque 0,6 mm longa, elongato-obovata, ferru- 

 ginea, rectangulariter reticulata. 



Provinz der südatlantischen Unions-Staaten: Auf sandigem und schlickigem 

 Boden der Küstengegenden von Nord-Carolina bis Florida und westwärts bis Texas. 



Nota. Affinis est J. megacephalo Curtis (in eadem regione obvio) a quo tarnen differt: 

 statura multo majore, caulibus crassioribus, foliis ensiformibus imperfecte septatis, inflorescentia 

 multo majore, diffusa, multicapitata , tepalis aequilongis, fructibus longius rostratis. Attamen 

 formae intermediae (hybridae?) occurrunt prope Jacksonville, Florida (pr. ex. A. H. Curtis 

 n. 4990 A). 



88. J. phaeocephalus Engelm. in Trans. Acad. St. Louis II. (1868) 484. — 

 /. Rostkovii? E. Mey. in Presl, Rel. Haenk. I. (1827) 142, non Syn. Juncor. (1822) 

 26. Watson, Bot. Calif. IL (1880) 209; Buchenau, Krit. Verz. aller . . . Juncaceen 

 (1880) 86 et Monogr. Juncac. (1890) 302. — Rhizoma horizontale, elongatum, stoloni- 

 forme. Caules erecti, graciles, 20 usque 60 cm alti, compressi usque ancipites, diam. 

 1,5 usque 3, raro 4 mm. Auriculae desunt vel raro minimae adsunt; lamina saepe 

 curvata, 1,5 usque 4 mm lata, apice subulata (in forma rara dubia unitubulosa, per- 

 fecte septata?). Capitula hemisphaerica, diam. 8 usque 10 mm. Flores 3,5 usque 

 4,5 mm longi, castanei; tepala subaequilonga, lanceolata, externa acuta, interna 

 obtusiuscula, membranaceo-marginata; stamina 6, tepalis paullo, usque 1 / 3 breviora; 

 antherae magnae, lineares, filamentis multo longiores; Stigmata longa, exserta. Fructus 



*) non Buchenau. 



