THE CALYX. 97 
united. In many monocotyledonous plants, the calyx is the 
sole floral envelope. 
_ 841. The separate parts or divisions of which the calyx. 
consists are called sepals, When these are united by their 
“margins, so as to form one piece of a more or less tubular 
form, the calyx is called monosepalous, gamosepalous, or mo- 
-nophyllous, as in Henbane (Hyoscyamus) and the other So- 
-lanez, and in the Labiate. The lower part, where the sepals 
_are united, form what is called the tube. They are generally 
read out, and remain separate above, and there constitute 
the limb. See Fig. 22. The tube is generally formed by 
the union of sepals at the margin—sometimes, as in Esch- 
-scholtzia, it is an expansion and dilatation of the flower-stalk. 
342. The Monosepalous calyx has different terms applied 
_to it, according to the mode in which the limb is divided. 
Iti 1s, 
_ 343. Toothed (dentatus) ,when the divisions are very short, ~ 
and have the appearance of sharp teeth. 
344, Cleft (fissus), when the divisions extend about half 
_way down: bifid, trifid, &c.; see Fig. 22, par. 358. 
345. Partite (divided), when the divisions are very deep. 
With respect to form, the monosepalous calyz is 
346. Tubular ; when it is cylindrical, long, and narrow, 
in Cowslip (Primula veris) ; see Fig. 22. 
347. Ventricose (urceolate); the tube swelled, but be- 
ming narrow near the limb, like a pitcher. 
348. Inflated ; thin, and dilated like a bladder, as in Blad- 
der Campion (Silene inflata.) : 
349. Campanulate ; shaped like a bell. x Z = 
350. Two-lipped (bilabiate) ; having its limb so divi 
any of the Labiate. 
‘When the tepals are separate and ine from ech 
fromthe bam specene olysepalou: 
represent an under and upper lip, soins ee sa 
