209 
Plate CXIX. 
Figs. 1-5.— Silphium perfoliatum, L. 1, style of pistillate flower x 30; 2, 
portion of style x 60; 3, stigmatic papillae x 500; 4, portion of style of herma- 
phrodite flower x 30; 5, brush hairs x 500. 
Fig. 6.—Brush hairs of sterile flower of Polymnia Canadensis, L. 
Fig. 7.—Stigmatic papillz of pistillate flower of Ber/andiera subcaulis, 
Figs. 8-10.—/va xanthifolia, Nutt. 8, stigmatic papille of pistillate flower x 
500 ; 9, Style of sterile hermaphrodite flower x 50; I0, brush hairs x 500. 
Figs 11-13.—Xanthium echinatum, L. 1, Stigmatic papille of pistillate 
flower x 500; 12, style of sterile flowers x 50; 13, brush hairs x 500. 
Figs. 14, 15 —Heliopsis helianthoides,(L.) B. S P. 14, brush hairs x 500 ; 15. 
stigmatic papilla x 500. 
Figs. 16, 17.— 7etragonotheca Ludoviciana, (T. & G.) Gray. 16, brush hairs x 
600 ; 17, Stigmatic papillee x 500. 
Fig. 18.—Stigmatic papille of Zclipta alba, (L.) Hassk. 500. 
Figs 19, 20.—LZchinacea angustifolia, DC. 19, brush hairs x 500; 20, stig- © 
matic papille x 500. 
Figs 21, 22 —Rudbeckia subtomentosa, Pursh. 21, brush hairs x 500 ; 22, 
stigmatic papille x 500. Pe 
Figs. 23, 24 —Lepachys pinnata, (Vent.) Torr. & Gray. 23, brush hairs x 500. 
24, stigmatic papillae x 500. 
Figs. 25, 26 —Borrichia arborescens, (L) DC. 25, brush hairs x 500; 26, 
stigmatic papillae x 500. « . 
Figs. 27, 28 —Helianthus rigidus, Desf. 27, style of Helianthus rigidus x 
30 ; 28, portion of style x 60. 
Figs. 29, 30.—Actinomeris alternifolius, (L.) D.C. 29, brush hairs X 500 ; 
30, stigmatic papillee x 500. ; 
Figs. 31-35.—Coreopsis palmata, Nutt. 31, 32, style x30; 33, portion of 
style x 60; 34, brush hairs x 500; 35, stigmatic papillae x 500. 
Fig. 36.—Brush hairs of Gadinsoga parviflora, Cav. X 500. 
Figs. 37-40.—Helenium autumnale, L. 37, style x 30; 38, portion of style 
x 60; 39, brush hairs x 500 ; 40, stigmatic papillee x 500. 
Figs. 41, 42.—Actinella linearifolia (Hook), Torr. & Gray. 41, brush hairs x 
500 ; 42, stigmatic papillae x 500. 
Fig. 43.—Brush hairs of Dysodia chrysanthemoides, Lag. X 500. 
Plate CXX. 
Figs. 1-4 --Achillea Millefolium, L. 1, style x 30; 2, style x 50; 3, stig- 
_ matic papilla x 500; 4, brush hairs x 500. 
Fig. 5.—Brush hairs of Matricaria inodora, 1, X 500. 
Figs. 6-10.—Artemisia Ludoviciana, Nutt. 6, style of pistillate flower x 30; 
7, stigmatic papillee of same x 500; 8, brush hairs of perfect flower x 500; 9, 10, 
stigmatic papillze of same x 500. 
Figs 11, 12.—Senecio aureus, L.- 11, brush hairs x 500; 12, stigmatic pa- 
pillae x 500. 
Figs 13, 14 —Petasites palmata, (Ait) Gray. 13, stigmatic papillae x 500; 
14, brush hairs x 500. : 
‘Figs. 15, 16. —Arnica Chamissonis, Less. 15, style x 30; 16, brush hairs x 
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