CHLORIS MACRANTHA, Nob.
CIILOllIS, Swartz.
S ubgenus TETRAPOGON, Desf.— Confer supra, p. 4o.
CHLORIS MACRANTHA, Nob.
Planta multicaulis, cæspitosa, verisimiliter annua. R adix fibrosa; fibrillis filiformibus, simplicibus, elongatis, lanulosis.
Caules.j/2-1-pedales, graciles, glaberrim i, lævigati, ramosi (saltern vegetiores), geniculati, subcompressi (saltern internodiis
inferioribus), phis minusve diffusi (basi interdum radicantes), basi conferte foliosi, superne remote foliati ; nodi glabri, con-
s tr ic ti; intet-nodia pleraque vaginis breviora; articulus sutnmus inclusus. R ami solitarii v. fasciculati, erecti v. ascendèntès, cauli
similes. Roma plana v. complicata, tenuia, striatula, margine scabra (sub lente remote serrulato-ciliolata)/ cætero sublævigata,
subtus glabra, supra plerumque sparse pilosa, anguste lineari-lanceolata, elongata (radicalia non vidimus; reliqua pleraque
3 -4 pollices longa; summa breviora v. interdum abortiva), apicenunc longius nunc brevius subulato^filiformia. V agin« lævi-
gatæ glabræ, herbaceæ, striatæ, margine membranaceæ; infimæ compressæ, distiche im bricatæ , dorso carinulatæ; reliquæ
pleræque involutæ, adpressæ, vix aut ne vix ventricosæ; excepta vagina folii ultimi, plus minusve ventricosa, laxa, spicarum
(imo fructiferarum) basin cingente. L igula membranacea, brevissima, truncata, irregulariter lobulata., Spicæ solitariæ v, ge-
minæ, terminales, 1-2 pollices (plerumque sesquipollicem) longæ, lineares, compressæ, erectæ (subdivergentes dura geminæ),
strictæ, e spiculis 20-40 compositæ, floratione ineunte densissimæ, perinde laxiusculæ, florum aristis longe exsertis plus minusve
divaricatis conspicue setosæ, folii summi vagina plus minusve amplexæ (saltern ad basin), quasi glabræ (florum villi nempe
glumis velantur). Rhachis continua, filiformis, flexuosa, irregulariter pentagona, angulis scabra (sub lente serrulato-ciliolata).
Spiculæ breve pedicellatæ, alternæ , distichæ (præfloratione secundæ, erectæ et imbricatæ, postea subpatentes, remotiores),
rhacheos internodiis paululo longiores, conspicue tri-aristatæ , quadri-v. quinque-floræ, a latere compressiusculæ, circumscrip-
tione turbinatæ. Spiculæ summæ (3 -5 ) plerumque tabescentes. P edicellt spicularum clavati, persistentes (cum gluma), crassi,
scabri, plus minusve arcuati, angulosi, basi exarticulàti. F lores cujusve spiculæ ad rhaehillam filiformem crassiuscülam gla-
bram superne atteniiatam basi articulatam alterni, approximati, disticbi, exarticulati : tres inferiores (quorum infimus major
proxime sequenti, tertius isto dimidio minor) subfastigiati, conformes, perfecti, herm aphroditi, triandri, bipaleacéi'; 2 superiores
neutri, floribus fertilibus dissimilès et mul to minores, unipaleacei (v. saltern palea interna abortiva);-alter (inferior)
mucronatus v. breve aristulatus, alter (terminalis). minimus, muticus. Gluma persistens (delapsa jam rhachillarfructifera),.
bivalvis, floribus infimis brevior (imo prætermissis horum aristis). V alvæ membranaceæ, pellucidæ ,.hyalino-albidæ, glabræ,
alternæ, inæquales, naviculares, carinulato-uninerviæ (nervo viridi, ûliformi), acutatæ, erecto-patentes.'VALVA inferior (rhachi
proxima) m inor, lineari-lanceolata, mutica, circiter sésquilineam longa, carina sub lente cartilagineo-marginulata et serrulato-
ciliolata. V alva superior (rhachi adversa) valva infèriori paulo (ad summum ï /4 lineæ) longior at subduplo latior, oblongo-
lancedlata, nervo excurrente mucroiiata, carinâ immarginata et solum juxta apicem serrulata, marginibus apice sérrùlata.
Glumell« paleædissimilès, a rhachilla spiculæ flemum decidua nunquam solüf*. P alea externa (flore infimo cujusve spiculæ
circiter 2 lineas longa; flore proxim esequente sesquilineamlonga; flore tertio vix ultra 1 lineam longa, arista haud compùtatà),
stramineav. violascens, chartacea, opaca, navicularis, carinulata, conspicue trinervia (nervis crasse filiformibus, subæqualibus,
lateralibus a margine remotis juxta apicem evanescentibus), obovato-cuneiformis, marginibus subinflexa, apice rotundato
nunc integerrima nunc retusa, infra apicem aristata, dorso ad nervös (præsertim nervo medio) et circum basin dense setosa
(setis albidis, ipsam paleam non superantibus), cætero glabra v. minutissime scabro-puberula, sub lente papilloso-punctulatà.
Arista crassa (pro genere), rigida, setacco-subulata, straminea v. violascens, plus minusve extrorsum arcuata, subflexuosa, a
dorso compressa, seriatim aculeolata, secundum florum situm plus minusve elongata: flore infimo 3 -4 lineas longa; flore
perfecto summo circiter 2 lineas longa. P alea interna (deficiens v. abortiva floribus neutris) paululo brevior palea externa
at subduplo angustior, membranacea, hyalina, carinato-binervia (carinis lato-marginatis, dense ciliolatis), oblonga, glabra
(carinis exceptis), basi angustata, apice carinis confluentibus acuminata (acumine fimbriolato), dorso complicata, lateribus
inde a nervis inflexa. P alea florum neutrörum minuta v. minima, membranaceo-herbacea, saccato-conçava, ecarinata,
cuneato-suborbicularis, tenerrime trinervia, retusa v. emarginata v. integerrima, glabra, v. dorso setulis brevissimis parcis
hirtclla, in flore penultimo sub apice mucronata v. aristulata, in flore tèrminali mutica. Squamulæ-htpogvn« minimæ, sub-
cuneiformes, emarginatæ, glaberrimæ. Stamina et pistillum bene asservata non vidimus. F ructus a paleis liberus, minutus,
palea interna subdimidio brevior, utricularis (pericarpio membranaceo, hyalino, inadhærente), ^ stipitulatus, glaberrimus,