524 LXxxiv. LENTiBULAiufi^, {UtricularicL 



A considerable genus, dispersed over nearly the whole glohe except the extreme north aad 

 south, aud especially numerous within the tropics both in the New and the Old World, several 

 species having a very wide range. Of the 20 Australian species, five are the same as tropical 

 Asiatic ones; anotbcr extends to New Zealand; the remaining 14 appear to be endemic; 

 hut one or two of the iniuute ones require fui'ther comparison from better specimens with 

 Indian species. The corollas, from which some of the chief specific characters are drawn, 

 rn-e indeed of so delicate a nature that it is exceedingly difficult to ascertain their precise 

 form in dried specimens ; and it is to be feared that, in several of the following descriptions, 

 slight inaccuracies may have crept in, which will have to he corrected chiefly from the exami- 

 nation of living plants. 



§ 1. NaX2JntQs.— Stems floati7ig. Leaves sithmerged^ divided into capUcmj segments, 

 mostly interspersed v:iih bladders. Floioers ydlow^ on axillary pedtmcles. 



Peduncles hearing about the middle a cluster or false whorl of oblong or 



linear vesicles 1. C^- stellar is. 



Peduncles without vesicles. 



Pedicels thickened aud reflexcd after flowering. Corolla rather large. 



Style about lliDclong 2. U,flexuosa, 



Peduncles filiform, pedicels slender and erect in fruit. Corolla snudl. 



Stigma almost sessile. Seeds winged 3. t/. exoleta, 



^ 2, Limosse. — Plants growing in mud (sometimes under water) with erect leafless 

 scapes. Leaves radical, often accompanied by jUanients of which some bear utricles^ or no 

 leaves at all at the time of flowering. 



Bracts not produced below their insertion, always alternate. 

 Flowers yellow or white, 1 or 2 on short filiform scapes. 



Corolla (white) upper lip emar";inate, lower shortly and broadly 



3-lobed ..... . . . . . . . . . . . . . 4. U.alhpra. 



Corolla (yellow ?) upper lip entire, lower with 1 broad lobe and 



2 lateral narrow ones 5. U. pygn^ea. 



Flowers yellow, several in a raceme. 



Pedicels very short, erect in fruit, not winged. 



Spur horizontal. Palate spotted with red • ^- U.ftlva. 



Spur descending 7- U.chrysanflia, 



Pedicels as long as the calyx, reflexcd, and more or less w^ins;ed in 



fruit. Spur descending " . . 8. f/i bifida. 



Flowers blue or white, several in a raceme. Pedicels short, not 



winged. Calyx-segments rather acute ; . 9. ?/. cyanea. 



Flowei's small, puqjle. Calyx-segmeuts verv obtuse. .^ 



Flowers distant, on very short pedicels. Scapes 1 to 4 in. . . . 10. Z7. latenjtora. 

 Flowers solitary. Scapes about 1 in. . , 



Corolla upper lip broad. Spur as long as the lower lip . . . H- TJ^sunpleX' 

 Corolla upper lip narrow. Spur half as long as the lower lip . 12. TJ. monantno . 

 Bracts produced below their insertion into a small free appendage. 

 Flowers purple (or deep blue?). 

 Pedicels opposite, in 1, 2 or 3 pairs or in whorls of three. Corolla 



lower lip large, semicircular. ,. _ , , 



Scapes erect, slender. Eastern species . , \^ , V . dichotoma. 



Scapes twining. AVestern species . 11.. ^. volubttis. 



Scapes l-f!owered. Bracts opposite or in whorls of three. 



Spur shorter than the large semicircular lower lip. ,. , / «,^ 



Upper lip entire or shortly 2-lobed. Eastern species . . . , U. U. dzckotoma. 



Upper lip deeply 2-lobed. Western species 15- f^- Sooken. 



Spur longer than the lower lip. 



Flowers under i in. long. Lower lip shortly 3-lobed . - . ■ 1^- TJ.nolace^\. 

 Flowers i to 1 in. long. Lower lip deeply 3-lobed .... 17. J^- Slenziesiu 

 Flowers racemose, alternate as well as the bracts. (Flowers blue?). 

 Pedicels as long as or longer than the calyx. Lower lip 2-lobed. 



