scariosa, horizontalis, vix liueam longa. Inflorescentia subpaniculata, e spicis plurimis cornpositis formata, in pani- culam linearem, elongatam, coarctatam, unc. latani, interruptaui disposita. Spica partiales muticae, - unc. longs, breviter pedicellatae, rachi appressae, lineari-oblongaa, compress*, spiculas 5-10 gerentes, basi nud* v. bracteat*, evaginat*. Bractea duni adsit spica partiali brevior v. *quilonga, subulata, liispida, basi latior, serniamplexicaulis, scariosa, interdum ad squamam elongatam, aristatam, vacuam redacta. Spicules parv*, ovat* v. oblong*, obtusa?, cylindrace* v. paido compress*, androgyn*, squamis superioribus masculis. Squama appressse, fructiferae squarroso-pateutes, late ovat*, subacute v. obtus*, valde concav*, scariosae, medio coriaceae, dorso obscure carinatae, carina plerumque superne ciliata, li bin. longae, pallide flavo-brunne*, nitidas, medio linea straminea notatae. Stamina 3; anthera lineares, parvae. Perigynium immaturum breviter pedicellatum, elliptico-oblongum, utrinque attenuatum, valde compressum, nervosum, ad margines supra medium argute denticulaturn, dorso convexiuseulum, nervo utrinque minute scabrido. Ovarium parvum, obovatiun, ad apicem profunde emarginatum. Stylus vix exsertus, in stigmata 3 desinens. Fructus squamam paido superans, nervis phirimis costatus, late orbicularis v. ampullaceus, basi subcordatus, breviter pedicellatus, superne in rostrum subelongatum apice bidentatum attenuatus, antiee planus v. concavus, dorso convexus v. turgidus, pallide fuscus v. atro-fuscus, subnitidus, acliaenio appressus, marginibus supra medium utrinque serratis. Achanium late elliptico-ovatmn, utrinque attenuatum, subinduratum.
A frequent inhabitant of the woods in some parts of Tasmania, New Holland, and New Zealand ; of a rigid harsh texture, cutting the hand when incautiously grasped.
4. UNCmiA, Pers.
1. Uncinia Hookeri, Boott; spica ferruginea laxiflora tenui cylindracea apice mascula, stigmatibus 3, perigyniis (arista pallida duplo brevioribus) lanceolatis ore integro laevibus nervosis alternatim ccmtiguis squama lanceolata acuminata acuta ferruginea nervo viridi infra apicem evanescente brevioribus. — Boott, MSS. (Tab. LI.)
Hab. Lord Auckland's group and Campbell's Island; grassy places in the woods, also on the rocks at the tops of the lulls.
Radix stolonifera. Culmus 6-pollicaris (anni prioris marcidus pedalis), filiformis, laevis, basi foliatus vaginisque feiTUgineis striatis tectus. Folia plana, ^—1 hn. lata, culmo subduplo longiora, carinata, apice triquetra, scabra; in exemplaribus minoribus vix tripollicaribus, locis siccis natis foha rigida cm-vat a. Spica 171in. longa, 1-g-lin. lata, ferruginea, laxiflora, e floribus laxis, alteniatim contiguis, pars tertia suprema mascula, nuda v. rarius setaceo-bracteata. Squama omnes conformes, lanceolatae, elongatae, acuminatae, acutae, nervo viridi, infra apicem albo-hyalimmi evanescente, perigyniis (floriferis) paululum longiores. Perigynium (floriferum) 2-i Hn. longum (cum arista et stipite 4-1- lin. longum) i- hn. latum, lanceolatum, utrinque attenuatum, pallidum, nervosum, ore integro, stipitatum. Achanium immaturum. Stigmata 3, longe plumosa, ferruginea. — Boott.
Plate LI. Fig. 1, a male flower and scale ; fig. 2, pollen; fig. 3, a female flower and scale; fig. -t, the same removed from the scale with the perianth laid open ; fig. 5, ovarium, style and stigmata ; fig. 6, arista : — all magnified.
XXXI. GRAMINEÆ, Juss.
Tribe AVENACE^E, Kunth.
1. HLEROCHLOE, Gmel.
1. Hierochloe redolens, Br.; panicida effusa subnutante, glumarum valvis flosculis subaequilongis interiore trinervi nervis 2 lateralibus ad medium attingentibus, flosculis masculis 5-nerviis pubescentibus
