THEMEDA. ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 667 
carinata, nervis lateralibus primariis subconfertis, plus minus prominen- 
tibus. Spatha propria racemum parum superans v. eo brevior. Racemus- 
intra spatham conspicue v. longe pedunculatus, pedunculo filiformi, 
labro. Spiculz involucrantes lanceolat:z, acutze : gluma I"* margi- 
nibus angustissime carinato-implicata, carina REOR v. rarius utraque 
a 
ciliolata. Styli stigmatibus prope mediam spiculam exsertis duplo—4-plo 
breviores (n. 5—7). 
a. Spicule 9 aristate gluma I"* loco nervi medii sulco latiusculo exarata; 
spicule cC triglumes, involucrantes in utroque pari ambze sessiles 
5. Th. tremula ; Anthistiria tremula Nees! ap. Steud. Synops. 
1, p. 401; Androscepia tremula Anderss. in Nov. Act. Soc. Ups. 2, 
p. 247. 
Annua? Culmi elati, 60—100 em. alti altioresve, robusti, multi- 
nodes, teretiusculi, estriati, glaberrimi, inferne foliifero-ramosi. 
Vagin® carinato-compress&, inferiores arctze, glaberrimse v. pilosulze, 
superiores dilatatz?, versus margines tuberculato-pilos®, laminas 
capitula racemorum excedentes ferentes. Ligula ad marginem angus- 
tissimum membranaceum glabrum redacta. Lamine 10—50 em. 
longe, 4—8 mm. lat, rigidule, suberectz, virides, glabræ v. raro ; 
utrinque hirtulæ v. basi tantum fimbriatæ, margine scabræ. Panieula 
!/,—[, culmi occupans, plus minus densa, subzequalis, nutans ; ejus 
rami bini— 3", inferiores elongati, primarii filiformes plurinodes, ultra 
medium usque nudi dein secus nodos subeonfertos ramulos secunda- 
rios ternos—5"* capillares arcuato-deflexos glaberrimos agentes, 
secundariis racemos 4^*—6"* brevi-peduneulatos dense capitulato- 
glomeratos (capitulis nucis avellanari:& magnitudine) gignentibus. Spa- 
the proprie 1—1,5 em. longz, lanceolatze, acute, carinato-com- ——— 
presse, glabre v. tuberculato-pilose, dorso subherbaces, margine . 
scarios®. Racemi 7—9 mm. longi, pedunculo circ. 2 mm. longo fulti, 
spieulas fertiles sepius 2, rarius 1 (quod utrum in eadem panicula 
invenitur) continentes. Spieule involuerantes 5,5—7 mm. longs, 
rufo-virescentes : gluma ĮI™ toto dorso prsesertim superne et versus 
tarinas pilis mollibus v. rigidulis basi plus minus tuberculatis vestita. 
Antheræ 2—3 mm. longs. Spieule 8 eum callo 0,8 mm. longo basi 
