ia(ï HETERACIA SZOWJTSII.
gona, inæqualiter quadricostata fcostis biformihus, alternatim nempe latioribus crassioribus,
et angustioribus tenuioribus, nunc carinatis nunc ecarinatis), in stipitulum crassum areola
basilari terminatum abrupte angustata, rostro gracili recto conico-cylindraceo loculo bre-
viori v. subæquilongo plerumque coronulato superata,lævigata v. obsolete transverse rugulosa.
A chænia centraliora columnaria v. obconica, 4-v. 5-costata (costis uniformibus, æqualibus,
ecarinatis v. obsolete carinatis, haud raro sulculo axili canaliculatis), teretiuscula v-4-aut 5-
gona, secus apicem squamuloso-muricata, cæterum lævigata, rostro longissimo pappifero
fîliformi (e conica basi) superata, estipitata, circum areolam-basilarem concavam 4-v. 5-cre-
nulata. Semen gracile, subclavatum, adhærens.
Planta annua, glaberrima, glaucescens. Gaules bifurcati v. iteratim pluriesve inæqualiter
dichotomi, subteretes, simulacrami etramuli fistulosi et ad nodos demum clavato-arnpliati.
Ramuli ultimi aphylli, elongati, pedunculiformes, teretes, sulculati, sursum demum clavati.
F olia runcinata v. indivisa; radicalia petiolata, subconferta, mox emarcida; reliqua sessilia,
sparsa, subamplexatilia, hastato-v. sagittato-auriculata. C alathidia solitaria, semper erecta,
alia alaria(v. ob alteri ramuli abortum lateralia) v. supra-alaria sessilia, alia terminalia quasi
pedunculata (ramulos nempe plus minusve elongatos serius evolutos terminantia), ,
Genus mira achæniorum allomorphia et conglomeratione insigne, sensu nostro simulac Harpachæna (Bnge) Rhagadiolo
affinibusque consanguineum, specie hucusque sistitur unica.
HETERACIA SZOWITSII, Fisch, et Mey.
H eteracia Szowitsu, Fisch, et Mey., I. c. — D. C. /.^.^L ed eb ., Flor. Ross., vol. a, p. 83o. — Kar. et Kiril., Enum.
Plant. Soon gor., n° 826.
Planta modo unicaulis erecta, modo pluricaulis plus minusve diffusa. R adix gracilis v. filiformis, subsimplex, perpendi-
cularis. Caules demum i/a-i 1/2-pedales (speciminibus hebetatis etiam occurrunt pauci-pollicares), Iævigati, striatuli, remote
fofiati (macriores mono-v. oligo-phylli), graciles (interdum subfiliformes), plus minusve flexuosi, nunc fere ab ima basi
nunc £oIum circiter a medio ramosi, erecti cum exiles, ascendentes v. plus minusve diffusi|cum plures. R ami simplices v.
inæqualiter semel aut iteratim dichotomi, divergentes v. divaricati, caule tenuiores, oligophylli v. aphylli, sæpe monophylli.
R amuli plus minusve divaricati, plerumque aphylli et ad nodulos (sicut et rami foliis deficientibusj cum adsint squamula
minuta subdeltoidea v. ovata v. ovato-lanceolata submembranacea acuta basi breve auriculata instructif sub anthesi filiformes,
perinde valde accreti et incrassati, ultimi demum 9-18 lineas longi, omnino nudi, sæpissime stricti. F olia tenuia,
cärnulosa, glauca, costato-uninervia, parce venosa; radicalia caulinaque infima breve petiolata, i -3 pol lices longa, modo
indivisa spathulato-oblonga v. oblongo-obovata v. obovata v. spathulato-obovata obtusa remote eroso-denticulata v.
sinuato-aut subruncinato-dentata, modo sinuato-pinnatiiida v. runcinato-pinnatifida v. runcinato-pinnatipartita (laciniis
deltoideis v. sublanceolatis, dentatis v. denticulatis, æqualibus v. inæqualibus, plerumque acutis); dentes et laciniæ carti-
làgineo-mucronati. F olia caulina (excepta infima radicalibus conformia) ramealiaque e sagittata v. subhastata (v. interdum
cordata) et plus minusve dilatata basi oblonga v. oblongo-lanceolata v. subdeltoidea, acüta v. obtusa, quoad dentes
sive lacinias simili modo ac folia infima variantia ; media inferioribus nunc majora, nunc æqualia v. minora; summa minuta
v. ad squamulas reducta. Calathidia sub anthesi minuta, etiam virginea erecta, postea valde accrescentia. Anthodium
glaberrimum , sub anthesi 3 lineas longum, floribus periphericis paulo brevius; fructiferum basi valde incrassatum et
ampliatum (foliorum parte libera tarnen vix accretaj, subhemisphæricum, achæniorum centraliorum rostris longe supe-
ratum, cum ramulo continuum. Foliota herbacea, membranaceo-margiiiulata, ecarinata, striatuia (nervulis 5 -7 , quorum
médius crassior, dorso prominulus), obtusa, mutica, apice plerumque fimbriolata, sub anthesi ovalia v. oblonga, perinde
hand raro ovata y. ovato-oblonga. Calyculi squamulæ subpellucidæ, invicem remotæ, anthodio multo breviores, ovatæ, v.
deltoideæ, obtusæ, v. acùtæ, apice sæpe fimbriolatæ. Gorollæ sub anthesi patentes, periphericæ circiter 3 lineas longæ;
ligulæ dentes breves, sùbdeltoidei, obtusi, apice callosi et subcucullati; tubus ligula triplo plusve brevior. F ilamenta
capillaria, glaberrima, antheris subtriplo breviora. Anther* lineares, basi breve subsagittato-auriculatæ (auriculis acutis v
obtusis, obsolete dentatis); appendice apicilari brevi, obtusissimo, membranaceo. Stylus antheras superans. Achænia
in capitula 4-5 lineas diametro meticntia et anthodio accreto adpresso cincta conglomerata, straminea, v. rufescentia, rostro
baud computatn 2-2 i /3 lineas longa. Achænia peripherica extima rostro ad summum i /3 lineæ longo superata, 1 1/2-2
lineas lata, ventre i-(v. raro a-) carinata. Achænia disci exteriora (interdum etiam pleraque interiorum) rostro 1/2-1
lineam longo superata, angulis plerumque crenata. Achænia centraliora (interdum et media) rostro 5-7 lineas longo