barnhart: genera in lentibulariaceae 53 



Folia supremaaeria, rosulata, laminis expansis, infima subterranea, 

 racHciformla, intermedia etiam radiciformia, sed ascidiifera. As- 

 cidia compresso-ovoidea, margine dorsale in rostro terminante, 

 margine ventrale carinata. Scapus esquamatus, bracteatus, 1-4- 

 florus; bracteae oppositae vel verticillatae, basisolutae; bracteolae 

 2, consimiles. Calyx 2-partitus; lobi herbacei, concavi, subae- 

 quales, capsulam amplectentes sed non excedentes. Corolla 

 cyanica, valde 2-labiata; labium superius parvum, inferius am- 

 plum, expansum, planum vel parum reflexum; palatum parvum, 

 dentatum ; calcar cylindricum obtusum. Capsula subglobosa, stylo 

 persistente brevirostrata. 



Species typica, Pleiochasia dichotoma comb. nov. {Utricularia 

 dichotoma Labill.). 



This genus, as here defined, comprises about 20 species, all 

 natives of Australia or New Zealand. It is undoubtedly a natural 

 group, but contains rather diverse elements; so much so that 

 Kamienski, when he proposed the section Pleiochasia, proposed 

 another section {Macroceras) here provisionally combined with it. 

 Most of the species are poorly represented in European and 

 American herbaria, and a careful study of the group might result 

 in the segregation of other genera from this one. 



8. Orchyllium gen. nov. Herbae scaposae epiphyticae vel ter- 

 restres, ramulis brevibus radiciformibus et stolonibus foliatis a basi 

 scapi radiantibus, radicibus veris nullis. Folia difformia, alia 

 aeria, laminis expansis, alia subterranea, radiciformia, ascidiifera. 

 Ascidia minuta, ovoidea, ore prope basin, saepe cum projectionibus 

 duobus pediculum utrimque praeterientibus. Scapus squamatus, 

 bracteatus, i-multiflorus; squamae plures, basifixae, saepe foli- 

 aceae; bracteae basifixae, saepe subfoliaceae; bracteolae consimiles. 

 Calyx 2-partitus; lobi plani, ad basin saepe truncati vel cordati, 

 tenuiter venosi, virides vel plus minus petaloidei, accrescente val- 

 vati et conjuncte adpressi et capsulam includentes. Corolla cyanica, 

 valde 2-labiata; labium superius amplum, subplanum, inferius 

 amplum, plerumque carinatum in lineam mediam; calcar ad basin 

 saccatum, distaliter tenuius, saepe sursum curvatum. Antherae 

 valde bilobatae. 



Species typica, Orchyllium alpinum comb. nov. {Utricularia 

 alpina J acq.). 



This genus comprises about 10 or 12 species, several of them 

 among the largest in the family, natives of the American tropics. 

 Owing to their epiphytic habit and orchid-like appearance (whence 

 the name Orchyllium), they are often grown with orchids, and have 



