312 
+4 Scales small, irregularly fringed, lobes of corolla ovate, less than one- 
half length of tube, their tips not incurved . . . 6. C. Cephalanthi. 
+++ Scales reduced to a couple of hairs on each side of the attached part 
OF te Siament ee et ... 7 C, Polygonorum. 
*%% Scales of moderate size, fringed to the base with rather short, regular hairs. 
Corolla lobes acute, half the length of the tube, . . . 8. C. cuspidata. 
#*%* Scales loag, fringed chiefly at the tip, sparingly towards the base, with 
long regular processes. 
+ Processes rather softer and more flexible; no serrate bracts on calyx. 
' ¢ Corolla lobes nearly as long as tube. . . . . 9. C. Gronovit. 
tt Corolla lobes less than half as long as tube . . 10, C. rostrata. 
tt} Processes stiffer and rounder; serrate bracts surrounding calyx. 
¢ Corolla lobes ovate ; bracts few in number, broad and serrate. 
11. C. compacta. 
t}{Corolla lobes acute; bracts numerous, narrow, serrate, re- 
curved at tip 12. C. glomerata, 
ORS, ee. ded eee ee ees Soe ee oe oe 
Following is a short description of the characters of each 
species, with special reference to the scale characters. For amore 
complete description of other characters, reference should be made 
to Engelmann’s studies on the genus: 
 C. Epriinum.—Flowers sessile, 5-parted, in small round dense 
heads. Calyx of 5 broad-pointed spreading sepals, as long as the 
corolla tube. Corolla lobes half as long as tube, broad, blunt- 
pointed. Stigmas filiform; stamens with short filaments and 
_ broad anthers. ‘Scales less than half length of tube, divided at 
centre, fringed at ends with about 4 or 5 deep’ crenulations, thin 
in substance. Capsule regularly circumscissile, capped by the 
withered corolla. 
C. Epiraymum.—Flowers 5-parted, sessile in small round dense 
heads. Calyx of narrow pointed sepals, 2% length of corolla tube- 
Lobes of corolla nearly as long as tube, rather broad, acute _ 
pointed. Stigmas filiform; stamens with short filaments and long 
anthers, the two lobes of the latter strongly furrowed. Scales 
thin, strongly incurved, half length of tube, fringed nearly to the 
base with deep irregular crenulations. Capsule regularly circum- 
scissile, capped by the withered corolla. 
C. ARVENSIS.—Flowers 5-parted, on short pedicels, in rather loose 
clusters. Calyx lobes very broad and blunt pointed, not exceed- 
ing corolla tube. Corolla lobes recurved, acute, as long as. tube. 
Stigmas round (as they are in all the succeeding species); anthers 
broad. Scales large, confluent at base, broad-ovate, equalling OF 
