452 BOTAXICAL GAZETTE [December 



EXPLANATION OF PLATES XLH-XLIV 



PL A TE XLII 



Fig. i. — Young seedling: J?, primary root; Cot, cotyledons; Ep, epicotyl: 



natural size. 



Fig. 2. — Older seedling; natural size. 



Fig. 3. — Part of same, showing shoots (5) in axils of cotyledons; natural 



size. 



Fig. 4. — Floral shoot; natural size. 



Fig. 5. — Flower seen from below; natural size. 



Fig. 6. — Pod; natural size. 



Fig. 7. — Same in longitudinal section; natural size. 



Fig. 8. — Glandular hair; X480. 



PLATE XLII I 



Fig. 9. — Cross-section of young root: Ep, epidermis; C, cortex; End, 

 endodermis; St, stereome; L, leptome; Camb, cambium; X112. 



Fig. 10. — Part of same root: P, pericambium; other letters as given; 



X744. 



Fig. 1 i .—Cross-section of old root: Co, cork; M, medullary ray; PH* 



protohadrome ; P, pith; X90. 



Fig. 12. — Part of same root; X744. 



Fig. 13.— Cross-section of leaf: Ep, ventral; Ep+, dorsal epidermis; 

 P, palisade tissue; P+, pneumatic tissue; X480. 



PLATE XLIV 



Fig. 14. — Part of root: letters as in fig. 11; V, vessels; X744- 

 Fig. 15. — Cross-section of stem; X480. 



Fig. 16. — Part of same: L, leptome above interfascicular cambium 

 (Camb); X744. 



Fig. 17. — Part of same: Coll, collenchyma; X480. 



les of secondary formation; X480. 



1 



.Fig. 19. — Stoma of leaf; X480. 



