338 ISOTACHIS. 
Folia majuscula, sat arcte imbricata, transversa, parum incuba, plus 
minus decurvo-secunda, late oblonga ovatave subcomplicato-concava 
(melius canaliculata), apice sinu brevi lunulari—raro profundiore et 
acuto—emarginata, rarissime triluba, apicibus acutis vel altero obtuso, 
margine perseepe argute dentata ciliatave; cellule mediocres majus- 
culeve, subincrassatee, omnes fere sublongiores quam late, oblongo- 
quadrate hexagonzeve, mediz ceteris subconformes, nec ad Herbertce 
instar vittam sistentes. 
Foliola foliis subconformia, plerumque parum minora, exacte 
transversa et symmetrica. Floresdioici; 2 terminales. Bractee in 
plerisque plurijuge, inter se liber (in unica specie connate), foliis 
submajores, subconformes, nisi magis profunde 2—3-lobe inciszque. 
—TIntra involucrum in aliis speciebus adveniunt bractez plurime 
minute (sive paraphyllia) que posterius cum perianthio tolluntur, 
eidemque adnate apice solo prominent. Horum paraphylliorum 2 vel 
3 extima, tenera biloba integrave, interdum libera restant, bracteis 
propriis celata.—Pistillidia ad 16. Perianthia in plurimis elongata 
et angusta, conica, cylindracea, fusiformiave, carnosa, cellulis 3-6 
crassa, extus paraphylliorum apicibus liberis seabra, teretia vel apice 
solo trigona, demum subtrifida; in aliis autem breviora latioraque, 
tenuia vel parum carnosa, leevissima, a medio (saltem) 3—5-carinata, 
ore plurifida. Calyptra brevis, tenuis vel carnosula, dimidio inferiore 
pistillidiis sterilibus stipata. Cupsula in pedicello breviusculo, 8-cell. 
in diametro, basi calceolo ciliato infixo, exserta, majuscula, cylindracea, 
9-3-plo longior quam lata, bistrata, ab ipsa basi 4-valvis, valvulis in 
spiram unicam completam contortis; cellule exteriores tesselate 
vacue, interiores fibra spirali (ex p. deficiente) farcte. Hlateres 
bispiri. Spore leves. Andrecia in I. aneipite sec. cl. Gottsche 
ramulo tenui, bracteis monandris constantia; in J. erythrorhiza autem 
inveni spicam 4 terminalem, bracteis foliis conformibus 2-(raro 
l-vel 3-) andris. 
Subgenus 1. Isoracuis. Perianthium elongatum pluri-(5-6-) stratam 
‘scabridum, teres, apice solo trigonum demum trifidum. Folia apice 
pro m. solum emarginata. ; : 
Subvenus 2. SENDTNERELLA 8. Per. brevius, ovoideum, 3-5-carinatum, 
“cellulis unistratis, in altera specie 2-3-stratis, conflatum, levissimum. 
Hab. Terrestris et rupestris, in locis humidis montium. 
Distr. America, a Mexico et insulis Antillanis per Andium juga ad 
Caput Horn usque ; necnon in Nova Zelandia. Species typicee 2 vel 3in 
Andibus Granatensibus legit Lrnpia. J. serrulate (Sw.), stirpis e colore 
ruberrimo et foliis eleganter dentatis insignis, necnon J. erythrorhize L. L., 
exemplaria fertilia legerunt Husnor allique in insulis Guadalupa, Sti. 
Vincentii, &e. Ipse autem nullam, nisi subgeneris Sendtnerelle speciem 
