THE KI.OIJA OK NK.I'.liASK A. '-' 



C'liara crassioaulis Sciileich. Cat. PI. llclv. ISJl. 



ChurafiK'tidd crdssicdiilis A. Uu. -Vun. Sci. Nat. Bot. 1, IT , .'J.w. 1831. 



Gcuei-al liahit of plant intcTiuediato bctweeu C.fnrtidciiind C. coniiiiviu ; stems 

 aiul brauchos strongly coated with lime and from ..") 2 mm. thick, cortex 

 cells double the number of the leaves and stronj^ly develoiiod; primary 

 cells more or less prominent than the secondarj-, usually about equally 

 developed; stipular whorl double; stipules usually short and blunt as in 

 > C. confraria ; leaves in whorls of C 10. usually 8-9, 4 8 colled, with 1 ."> 

 corticated nodes, the naked cells usually long, en I-cell bluntish; monoe- 

 cious, 14 fertile joints; antherids largo, 4.J0 .j40 « iu diam.; carpogones 

 intermediate between 0. coiitraria and ('. foctidu; spore black or very 

 dark browu, .540-630 u long, about 375 h wide; bracts once to twice as long 

 as carpogone. 

 Form scmxERMis macrophylla.— Spines only slightly developed; bracts as long or 



twice as long as the fruit: leaves usuallj' long. 

 Form sfBiiisriDA mackopiiylla loN'gibracteata.— Spines ..5-2 mm. or more long; 

 leaves usually long, bracts long and broad, 3 .j times as long as fruit 

 The forms, especially the last, more common than the type; usually growing 



together. 

 Piue Ridge (type and forms mi.xed), Haigler (form 2). 



PI. XXXIII. (form 2) Fig. 1. part of plant natural size; Fig. 2, part of stem 

 showing stipular whorl, bases of leave?:, and 2 fertile nodes of a leaf; Fig. 

 3, carpogone with spores; Figs. 4-5, cross section of stem, 5, a, b, spines 

 growing from primary cortex cells. x.50. 



t'hai-a evoliita Allex Bui ? Torr. Bot. Club 1SS2, p. :, \,\. 19. 



Plants short, 10-15 cm. long, much branched, notcoated with lime: Icavi's (I-lO 

 iu a whorl, whorls numerous, 4 5 corlicated nodes and two short naked 

 nodes; end-cell acuminate, corticating cells about the same number as 

 leaves, secondary cells more or less intermixed; stipular whorl double; 

 stipules long; spines long, numerous, mostl.y iu fascicles of 2-3; monoe- 

 cious, 3-4 fertile nodes on each leaf; antherids 270.380 n iu diam.; carpo- 

 goues 810X.540 ,h; crown not as high as broad, only slightly or not at all 

 contracted at the base; spore dark browu or black, 612-630x340-390 //, with 

 about-Si^ more or less distinct striae. 



In a lake, Sheridan county. Smith & Pound No. 2(;i. 



This plant appears to be intermediate between C. confraria and C crinita. It 

 is almost exactly like the latter species e.xcept that C. crinita is dioecious. 



PI. XXXIV., Fig. 1, part of plant natural size; Fig. 2, part of stem showing bases 

 of leaves of a whorl with one entire leaf and stipular whorl; 2, a, b, c, 

 spines; Figs. 3, 4, 5, cross-sections of stem; Fig. 6, spore x.50; Fig. 7, spore 

 xWO. 



Cliara fragilis Desv. in Loiseleur Not. Fl. Fr. 157. 1810. 



Plants long and sleuder, rather rigid; stems evenly corticated, cortex-cells 3 

 times as many as leaves iu whorl next above; stipular ring double, stipules 

 very short; leaves long and pointed, 5-8 corticated segments and one or 

 two sliort, naked segments at the end; end-cell pointed; 6-9 leaves in a 

 whorl, whorls either close or remote; monoecious; 3-4 fertile joints on 

 each leaf; antherids 270-360 n iu diam.; carpogones long and narrow: 

 crown 180-200/; high, as broad as high; spore dark browu, nearly black. 



