Philodendrec. ] CXCIL  AROIDEJE. 981 
47. Rhektopnyllum, N. E. Brown in Trim. Journ. Bot. 1882, 194, t. 230.—Flores in 
spadice inappendiculato monoici, omnes perfecti, d et 9 contigui. Perianthium 0. Fl. 
d: Stamina 3-5, trigono-prismatica, truncata, dorso contigua ; antherarum loculi lineares, 
contigui, t crasso sequilongi, poris apicalib il Fl. 9 : Ovaria 
ovoidea globosa v. oblique:compressa, 1-loeularia ; stigma sessile, pulvinare ; ovulum soli- 
tarium, breve, iropum, funieulo brevissimo placentze parietali elongatze in loculum 
exiens affixum, mieropyleinfera. Fructus . . . Frutex scandens, Folia longe petio- 
lata, ampla, submembranacea, ambitu subhastata v. cordato-ovata, acuta, pertusa et in 
lacinias paucas latas irregulariter pinnatisecta, costa válida, nervis patentibus validis, 
petiolo 1-2-pedali basi vaginante. Pedunculi solitarii v. plures, breves, crassi. Spatha 
boylind j [7 luta, crasse coriacea, obtusa. Spadix sessilis, cylindraceus ; 
inflorescentia d quam 9 triplo longior, paullo crassior, obtusa. 
Species 1, Africze tropicie occidentalis incola. 
48. Aglaonema, Schott, Melet. i. 20; Gen. Aroid. t. D9.—Flores spadice inappendi- 
eulato monoici, omnes perfecti, d' et 9 arcte contigui, rarissime interspatio staminodii 
instructo disjuncti. Perianthium 0. Fl. d: Stamina 2-4, distincta, obovoidea v. clavata, . 
3-gona v. cuneata, dorso contigua ; antl loculi v. longiores con- 
nectivo immersi, i poris apicalibus dehiscent Fl. 9 : Staminodia, si adsint, 1-3, 
prismatica, ovario ora. Ovarium 1- rarissime 2-loculare ; stylus brevis, crassus, v. 0, 
stigmate magno orbiculari v. infundibulari, rarius parvo depresso ; ovula in loculis soli- 
taria, brevia, anatropa, funiculis brevibus placentis subbasil 1 
ibus affixa, micropyle infera. 
Baoes paues, swepe magnse, ovoides v. oblongs, l-spermw. Semen ovoideum v. ellip- 
soideum, subsessile, erectum, testa b levi, albumine 0 ; embryo maeropodus. 
—Herbse, caudice erecto v. prostrato basi stolonifero v. rhi ie tuberoso. Folia ovato- 
v. oblongo-l lata, costa i la, nervis ad marginem attingentibus, nunc 4 v. 
pluribus crassiusculis arcuatis, nune omnibus tenuissimis densis p llelis, petiolo elongato 
longe vaginante. Pedunculi fasciculati, plerumque breves. Spatha recta, tubo breviter 
convoluto superne in laminam ovatam v. ovato-lanceolatam apertam v. conchiformem 
et fere clausam v. subeylindraceam dilatato, demum marceseens. Spadix spatham zequans 
v. ea brevior, rarius longior, sessilis v. stipitatus ; inflorescentia d* elongata, cylindracea v. 
clavata, densiflora; 9 brevis, pauciflora. Fructus tubo spathze non inclusus. 
Species ad 20, omnes tropiez, plurimz Asie tropiem et Archipelagi Malayani incole, paucse 
Africans, Engl.Arac. 496. Blume, Rumph. i. t.36, 66, 66. — Wight, Io. t. 804 et 806 (Cala). Regel, 
Gartenfl. t. 470. Bot. Mag. t. 5500, 5760. Stigma in speciebus Africanis parvum et ovarium 
2-loeulare. 
AcraoponuM, Schott, Gen. Aroid. t. 58. Engl. Arac. 443, et in. Bull. Soc. Tosc. Ort, 1879, 300, 
planta uliginosa, Malayensis, fruetu ignoto, est ut videtur 49laonematis species (4. palustre, Teysm. 
et Binn.) rhizomate tuberoso, petiolis peduneulisqge crassissimis elongatis, fl. d'infimis paucis imper- 
feetis, staminodiis 3-4 ovarium 1 2-loeulare eingentibus et stigmate magno obscure 4-lobo. 
Habitus ex Griffithio (Notul. iii. 148) omnino Cryptocorynis. 
49. Philonotion, Schott, Gen. Aroid. t. 54.—Flores in spadice inappendiculato monoii, 
d et Q longe remoti, organis neutris paucis sparsis conicis interpositis. Fl d: Stamina 
2, distincta, compressa, cuneata, truncata, filamento 0 ; antherarum loculi connectivum 
ginantes, eoque tequilongi, distantes, poris apicalibus dehiscentes. Fl. 9 : Ovaria 
numerosissima, lineari-oblonga, subcylindracea, 1-locularia, in stylum brevem. continuum 
producta, stigmate pulvinari ; ovulum solitarium, orthotropum, erectum, funiculo curvo 
parietali affixum, mieropyle supera. Fructus . . .—Herba, rhizomate hypogzmo. Folia 
longe petiolata, I lat lat inata, nervis imi issimi i 
atüngentibus, subtus pallida, petiolo gracili lamins sequilongo sublonge.vaginante. 
Peduneulus gracilis, petiolo squilongus. Spatha erecta, tubo convoluto, fauce vix con- 
stricta, in laminam sequi. beymbif: haud latiorem desinens, apice caudicu- 
lata, persistens?. Spadix longe stipitatus, spatham squans, gracilis ; inflorescentia d 
