116 



BOTANY. 



Class III. 1. Gracilis. Perhaps the Airasubspicata of Linn. 



Triandria. 2. Cri'tata. Poa crislata of different authors. 



3. Tubc r osa. Aira criklata of Smith. 



4. PMeoidcs. Poa cristata of Linnaeus. 



5. Villosa. Europe and Barbary. (Desfont.) 

 LXXII. TRISETUM. Cal. 2-3-florus, accuniinatus, 



carinatus. Cor. aristis 2 terminalibus subdenti- 

 formibus (glum, apice sctoso-bifidis), 1 dorsali rec- 

 ta nee contorta, flosc. ut plurimum glabris. (Spi- 

 culee compressor, pallesccntes. (Persoon.) 



1. Stria/um. Avena tennis of Willd. 



2. Vtllosnm. Avena tri.'.eta of Willd. 



3. Nuditm. Avena pallida of Willd. 



4. Nitidum. Near Moscow. Dcsfont. 



5. Lutctim. Martinique. 



6. Parviflorum. Crops on Mt. Atlas. (Desfont.) 



7. Pralcnse. Avcnajtavescens of Linn. 



8. Paniceum. Portugal. (Link in Schrader's 

 Jotirtk. ) 



9. Hispanicitm. Arena Loefflingiana of Linn. 



10. Ovatnm. Hills of Spain. (Cavanillcs.) 



11. Arislidioidcs. Cape of Good Hope. 

 Several species of the genus A VEX A, for example, 



Peniixylvanica, Lupulina, and Purpurea, seem 

 to belong to this genus. See Persoon's Synop- 

 sis, p. 98. 



LXIII. TBICHOON. Cal. 2-valvis, 1-florus. Cor. 

 2-valvis, cal. duplo major : uterque nudus. Ger- 

 men lana cinctum. (Persoon.) 



1. Karka. Artindo Kar/ca of Willd. 

 The calyx in Sacchartim, the corolla in Artmdo, and 

 the germen in Trichoon, is surrounded with wool. 

 Persoon's Synopsis, p. 102. 



LXXIV. IMPERATA. Flor. omnes hermaph., ge- 

 minati altero pedicellate. Gluma bivalvis, biflora, 

 asqualis, mutica, lana cincta. Perianth, inclusa, 

 hyalina, mutica ; exterius univalve, neutrum ; in- 

 terius bivalve, hermaphroditum, valvula interiore 

 latiore. Squamulie nulls: hypogynae. Stam. 2. 

 Stigmata plumosa. Cyrilf. 



1. Cylindricum. Spain, Barbary, and New Hol- 

 land. Peren. 



2. Koenigii. India. 



3. Anmdinacca. The Lagurus Cylindricus of 

 Linn. 



Though this genus has only 2 stamina, it is placed 

 here on account of its great affinity to Saccha- 

 rum, from which it differs in the want of the 

 Squamitlte hypogyncc. See Brown's Prodromus, 

 p. 203. Persoon seems rather disposed to rank 

 this genus under Saccharum. Synopsis, p. 103. 

 LXXV. ERIANTHUS. Cal. gluma bivalvis, mutica, 



valvis lineari-oblongis canaliculatis, basi villis densis 



involucrata. Cor. bivalvis : valva interiore longe 



aristata. 1-andra. (Michaux.) 



1. Givnnteum. (Anthoxanthum Giganteum.) 



2. Brevib/irbe. Hillsof Tenassee and Carolina. 

 Though this genus has only 1 stamen, it is placed 



here on account of its great affinity to Saccha- 

 rum, from which Persoon has not yet ventured 

 to separate it. 



LXXVI. COLLADEA. Flor. spicati, rachis flexuosa. 

 Cal. 2-4 partitus : laciniis subovatis basi sinu (den- 

 teque) distinctis, 2-florus. Cor. 2-valvis, cal. bre- 

 vior, mutica aut aristata. (Persoon. ) 



1. Dislac/iya. Island of Mindanao. (Cava- 

 nil/es.) 



2. Monostacfiyn. ( Tripsacwn hermaphrodilum 

 of Linn.) See Persoon's Synopsis, p. 107. 



LXXVII. OttTHOPOGON. Gluma biflora, bivalvis, 

 subxqualis, valvula exteriore aristata, vix minore ; 

 interiore brevius aristata v. mutica, aristis edentulis ! 

 Flosculi dissimiles, sessiles, exterior ma^c'ilus v. neu- 

 ter, valvula exteriore ttxtura glumse ; interior her- 

 maphroditus, chartaceu*. Squamulve 2 hypogynae. 

 Stigmata plumosa. Semen perianthio cartilagineo 

 inclusum. ( R. Brr>:t.-n. ) 



1. Compotitus. T 



2. JEmulus. ( All from New Holland. Set 



3. Flaccidus. f Brown's Piodromus, p. 194. 



4. Imliecillis. J 



LXXVIII. NlURACHNE. Gluma biflora, bivalvis, val- 

 vulis nervosis, acutis, hifpidis, coriaceis, subaequa- 

 libus, exteriore parum minore, fructiferis induratis. 

 Flares dissimiles ; exterior neuter, bivalvis, valvula 

 exteriore gluma; subsimili ; interior hermapl rodi- 

 tus, hyarino-membranaceus, bivalvis. Squamulcc 2 

 hypogynae. Stigmata plumosa. Semen hberum, 

 e perianthio membranaceo decedens. (It.Bromi.) 



1. Alopfcuroidca. New Holland. 

 See Brown's Prodromus, p. 196. 



LXXIX. ISACHNK. Gluma biflora, bivalvis, sequa- 

 lis, membnmacea, obtusa. Flosculi a;quales, bi- 

 valves, chartacei ; exterior masculus ; interior fe- 

 mineus. Sqiutm. 2 hypog. Stigma/a plumosa. 

 Semen pcriuuthio indurato jpcluoiim. (It. Bron'/i.) 



1. Australia. New Holland. 

 See Brown's Prodromus. p. 196. 



LXXX. XEROCJILOA. Gluma biflora, bivalvis, in- 

 Eequalis; excavationi racheos paralk-la, semi-immer- 

 sa; valvula exteriore minore. Perianlhium utrum- 

 que exsertum, bivalvj, mnticLim, tru'inbranaceum, 

 subulatum; exterius inasculum, triandrum : inte- 

 rlus femineum, stylis 2, basi connatis. SquaninlcK 

 nullas hypogynx. Sem^n valvula interiore ! char- 

 tacea perianthii inclusum. (R. Brown.) 



1. Imberlis. 1 Both from New Holland. See 



2. Barbnta. J Brown's Prodromus, p. 196. 

 LXXXI. DIMERIA. Flares omnes hermaph., sessi- 

 les, spicati, rachi inarticulata persistenti. Gluma, 

 biflora, bivalvis, coriacea, basi barbata, valvula 

 utraque naviculari, interiore angustiore. FJosculi 

 inclusi, hyalini; exterior univalvis, neuter; interior 

 hermaphroditus, bivalvis, valvula exteriore arista- 

 ta, interiore minutissima. Squam. 2 hyp<>gynar. 

 Stigmata plumosa. Semen, cylindraceum, v.ilvula 

 exteriore glumae inclusum. (R. Rroirn.) 



1. Acinaciformis. N. Holland. 1 Brown's Prod. 



2. Indica. East Indiss. J p. 204. 

 LXXXII. OPHIURUS. Spica teres, articulis uni- 



floris, floribus excavationibus, racheos immersis. 

 Gluma biflora, bivalvis, valvula exteriore cavtila- 

 ginea ; interiore concava, membranacea. Periait- 

 tfiium utrumque inclusum, membranaceuni, muti- 

 cum : exterius masculom vel neutrum : interim 

 hermaphrod'tum. (11. Broti'/i.) 



1 . Cort/mbosa. ( Rotlboellia corymbosus. ) 

 See Brown's Prodromus, p. 206. 

 LXXXIII. LEI'TUIIVS.. Spica teres, articulis uni- 

 floris, floribus excavationibus racheos immersis. 



