192 
be, ought to be manifest in the seed and so serve as a truer index 
to its position and relationship. And this fact, it seems to me, ap- 
pears with unmistakable clearness in the case of our Eastern 
Orchids. 
Explanation of Plates. 
PLATE CL, 
Fig. 1. Testa of Acroanthes unifolia X 100. : 
Fig. 1a. Same showing sculpturing of inner cell wall of testa be 
Fig. 2. Liparis liliifolia, seed \< 100. 
Fig. 3. Calypso bulbosa, seed < 60. 
Fig. 3a. Same showing sculpturing of inner cell wall of testa )< 325. 
Fig. 4. Tipularia unifolia, seed X< 100. 
Fig. 4a. Same showing sculpturing of inner cell wall of testa Be | 
Fig. 5. Aplectrum spicatum, seed 35- 
Fig. 5a. Same showing sculpturing of inner cell wall of testa < 180. 
Fig. 6. Corallorhiza innata, seed Sei 
Fig. 6a. Same showing sculpturing on inner cell wall of testa )< $26. 
Fig. 7. Corallorhiza multiflora, seed x Tig 
Fig. 7a. Same showing sculpturing of inner cell wall of testa XX 325. 
PLATE CLI. 
Fig. 8. Hexalectris aphyllus, seed > I00. 
Fig. 8a, Same showing sculpturing on inner cell wall of testa < 175. 
Fig. 9. Bletia verecunda, seed 100, 
Fig. 10. Listera cordata, seed < 100. 
Fig. 11. Listera australis, seed X 100. 
Fig. 12, Listera convallarioides, seed x I00. 
Fig. 13. Gyrostachys cernua, seed <I20. 
Fig. 13a. Same showing the sculpturing on inner cell wall of testa 175- 
Fig. 14. Peramium repens, seed 88. 
Fig. 15. Peramium pubuscens, seed ee 88 
Fig. 16. Epipactis viridifiora, seed 30. 
Fig. 16a. Same showing cell wall over nucellus S< 200, 
Fig. 17a, Nucellus of same showing arragement of cells X 175. 
PLATE CLII. 
Fig. 17. Arethusa bulbosa, seed >< 100. 
Fig. 18. Limodorum tuberosum, seed X< 100. 
Fig. 19. Pogonia ophioglossoides, seed x 55- 
Fig. 19a. Same showing sculpturing on inner cell wall of testa ~ 17%. 
Fig. 20. Pogonia trianthophorus, seed 100, 
Fig. 20a. Same showing sculpturing on inner cell wall of testa bes 
Fig. 21. Pogonia verticillata, seed BS. 
Fig. 22. Pogonia affinis, seed < 55: 
Fig. 23. Orchis spectabilis, seed < 60, 
Fig. 24. Habenaria ciliaris, seed \< 75. 
Fig. 25. Cypripedium pubescens, seed ae 
Fig. 25a. Same showing cell wall over nucellus X 100, 
