82 Anton K. Schindler. — Halorrhagaceae. 



b. Fructus 2-partitus, stamina 2 (vel 4?), folia opposita vel 



alterna, inferiora submersa capillaceo-pinnatifida Subgen. III. Dicarpum Schindler 

 Ct. Fructus grosse tuberculatus, 0,8 mm longus; petala 



et stamina in masculis certe 2 " a 35. M. Mexianum. 



ß. Fructus laevissimus plus quam 1 mm longus; petala 



et stamina in masculis 4 na (?) 36. M. dieoccum. 



Subgen. I. Eumyriophyllum Schindler. 



Pentapteris V. VC. neque Hall, (sect.) in DC. Prodr. III. (1828) 68. — Spondylo- 

 phyllum Torr, et Gray (sect.) 1. c. 529. — Spondylastram Torr, et Gray (sect.) 1. c. 

 — Flores 8- vel 4-andri, antheris late linearibus non ellipticis, norma hermaphroditi 

 vel reductione unisexuales ovario in masculis quamquam maxime reducto obvio; fructus 

 4-partitus. 



Sect. a. Pentapteris P. DC. emend. 0. Ktze. 



Pentapteris P. DC. emend. 0. Ktze. in T. v. Post et 0. Ktze., Lexic. gen. phan. 

 (1903) 379. — Pentapteris P. DC. neque Hall (sect.) in DC. Prodr. III. (1818) 68 

 (e. p.); Reichb. Consp. (1828) 169. — Pentapteris Hall. Enum. stirp. Helv. I. (1742) 

 201. — Pentapterophyllon Dill. Nov. gen. (1719) 125. — Pentapterophyllwm, Wittst. 

 Etym. Handw. (1852) 668. — Flores staminibus 8 instructi. 



Subsect. a. Spirophyllum Schindler nov. subsect. 

 Folia alterna neque opposita, nee verticillata. Omnes australienses. 



1. M. gracile Benth. Fl. austral. II. (1864) 489. — Herba tenella evidenter 

 annua ereeta caule filiformi, simplex vel basim versus sparse ramosa foliosa, usque ad 

 0,2 m alta. Folia omnia alterna, omnia, etiam florifera summa, pinnatiüda vel pinna- 

 tiseeta, lineari-oblonga, apice subrotundata vel acutiuscula, basim versus sensim angus- 

 tata, lobis paucis 3 — 7 apice brevioribus, dz 8 mm longa et ad 1,0 mm lata. Flores 

 in foliorum axillis singuli sessiles, norma hermaphroditi, proterandri vel reductione infimi 

 foeminei summi masculi, bracteolis 2 longe anguste triangularibus minutissime, basim 

 versus paullo manifestius serrulatis apice acutiusculis 1 ,0 mm longis et 0,2 mm latis 

 albidis praediti; calycis tubus tetraqueter, 4-sulcatus, dz 0,7 mm longus et totidem 

 diam. metiens, lobis minutissimis deeiduis vel subnullis; petala 4, magna, cochleiformi- 

 navicularia, longe unguiculata, cucullata, ± 3 mm longa et latere visa dz 0,5 mm 

 lata; stamina 8, filamentis primum brevibus demum usque ad 1,5 mm elongatis, antheris 

 dz 1,5 mm longis et 0,3 mm latis; styli breves minute stigmatosi. Fructus brunneus 

 minutus 4-partitus, merocarpiis compressis dorso tuberculatis, usque 1,0 mm longus et 

 totidem diametro metiens. 



Queensland (ex Bentham); Neu-Süd-Wales: Raymond Terrace (B et che, Nat. 

 Herb, of N. S. W. n. 33). — Herb. Berlin. 



2. M. trachycarpum F. Muell. Fragm. II. (1860) 87; Benth. Fl. austral. II. (1864) 

 489. — Herba tenella aquatica vel limosa, caule radicante ascendente basim versus 

 ramoso lignoso , foliosa, usque ad o,15mm alta. Folia omnia alterna, inferiora capil- 

 laceo-pinnatifida, lobis paucis, superiora pinnatiseeta vel serrata vel integerrima, linearia 

 vel lineari-oblonga, acuta, dz 6 mm longa et ad 0,4 mm lata. Flores in foliorum axillis 

 sessiles singuli , norma hermaphroditi vel reductione infimi foeminei summi masculi, 

 bracteolis 2 ovato-lanceolatis acutis dz 0,3 mm longis et 0,1 mm latis subintegris; calycis 

 tubus dz 0,4 mm longus et totidem diam. metiens, lobis 4 minutissimis vel subnullis; 

 petala 4, oblonga, cochleiformia, cucullata dz 2,5 mm longa et antice visa ad 1,0 mm 

 lata; stamina 8, filamentis ad 1,0 mm, antheris ad 1,5 mm longis linearibus; styli 4, 

 brevissimi, longe denseque papillosi. Fructus 4-partitus, atro-purpureus , merocarpiis 

 rotundato-compressis dorso minute tuberculatis, dz 0,5 mm longus et totidem diam. 

 metiens. — Fig. 23. 



