ANDROPOGON.  ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 395 
tata, pedicellata 9 mutica ; ubi solitariæ, ibi ne pedicelli quidem 
rudimentum juxta spiculam 8 relinquitur. Gluma I™ coriacea, mar- 
ginibus involutis reliquas amplectens, bimucronulata; II“ carinata, 
in spicula 2 aristam patulam exserens ; II hyalina; IV* in spicula 
9 biloba, inter lacinias aristam gracilem perfectam emittens. Palea 0. 
Lodieule minute, euneatz. Stamina 3. Stigmata stylos subsupe- 
rantia. 
Gramen perenne, elatum, valde ramosum, foliis linearibus. Racemi 
breves, vagina spathiformi fulti v. ex illa exserti, graciles, laxi. — A 
Schizachyriis differt non solum spiculis ad nodum superiorem semper 
solitariis, sed etiam articulis exappendiculatis, gluma I™ marginibus 
involuta. 
Obs. Anadelphiam primo genus proprium habui, quia in speeimini- 
bus quz olim suppeditarunt spicule laterales pedicellatze vel omnino 
defuere v. non nisi ad nodum imum adfuerunt. Nunc vero, examinatis 
racemis quos a specimine authentico Andropogonis leptocomi Trinii 
desumptos cl. Maximowiez benigne mecum communicavit, hanc notam 
simili modo variabilem esse comperi ae in Arthraxo mierophyllo 
Hochst. Sed nunquam in nodo racemi summo spiculam inveni pedi- 
cellatam. 
27. A. leptocomus Trin. ! in Mém. Ac. Petersb. ser. 6, vol. 2, 
p. 264; Anadelphia virgata Hack. l. c. p. 241. — Reise d. Gazelle, 4 
Bot. tab. 2, f. 2 (analys.). 
Perennis; innovationes intravaginales. Culmi 80—160 cm. alti, 
graciles, erecti, compressi, glaberrimi, supra medium paniculato- 
ramosi. Vagin® carinato-compress&, arcte, glaberrimæ. Ligula bre- 
vissima, truncata, glabra. Laminz longe acuminatz, vernatione con- 
volutze, adulte plans, 20—30 em. longe, 4—5 mm. late, rigidule, 
virides demum fuscescentes, glabr&, subtus leves, supra margini- 
busque scabr&, costa media tenuicula subtus carinante percursæ. 
Panicula foliosa virgata usque ad 50 em. longa, ramis solitariis v. binis 
elongatis (—30 em. longis) plurinodibus gracilibus scabris, ramulos 
secundarios solitarios v. binos breves, raro etiam tertianos procrean- 
tibus, rectis, glabris, ad quemvis nodum vagina spathiformi instructis; 
spathe propri: racemos fuleientes cire. 2 cm. longs, angustissimze, 
pedunculo filiformi demum breviores. Racemi gracillimi articulis 
filiformibus scabris v. breviter ciliatis; spiculæ sessiles lineari-lanceo- 
late 5 mm. longs, pallidæ : gluma I"* coriacea apice in muerones 
2 divergentes scabros abiens, dorso convexa, glaberrima, tenuiter 
