1905] COULTER & LAND—TORREYA TAXIFOLIA 77 
PLATE A: 
Fic. 1. Staminate branch; October 21, 1904. X1I. 
Fic. 2. Ovulate branch; April 7, 1904. X1. 
Fic. 3. Mature seed; October 21, 1904. XT. 
Fic. 4. Cross-section of seed showing ruminated endosperm with storage 
region in center, seed pe stored food in the perisperm, and resin ducts. X 3. 
Fic. 5. Longitudinal median section through seed showing embryo, rumi- 
nated endosperm, and seed coats. 3. 
PLATE J, 
Fic. 6. Transverse section through a staminate strobilus showing bracts and 
primordia of stamens; gust 12, 1904 4. 
Fic. 7. Longitudinal section through a staminate strobilus showing envelop- 
ing bracts, primordia of stamens, and storage ges the position of the bundles 
is shown by the dotted lines; August 12, 1904. 
Fic. 8. Primordium of a stamen; August 12, ai 
Fic. 9. Median section through an adaxial sporangium sieice the disor- 
ganizing primary sporogenous cell and two wall cells; October 21, 1904. X 460. 
F 
resin cavity above and a functioning sporangium below; October 21, 1904. X 255. 
Fic. 12. Pollen grain showing primary spermatogenous cell and tube cell; 
April 7, 1904. X 1250. 
Fic. 13. Tip of a pollen tube which has penetrated about half way through 
the nucellus; June 10, 1904. 460. 
Fic. 14. Tip of pollen tube in contact with the embryo sac; the female gamet- 
ophyte is in the free nuclear stage and the nuclei are placed parietally; June 21, 
1904. X 460. 
Fic. 15. Embryo sac in free nuclear stage showing one of the nuclei occupy- 
ing ae oS of the megaspore mother-cell; June 10, 1904. 185. 
- 16. Pollen tube in contact with the endosperm; an archegonium is at 
m i of the tube; July 26, r904. x25. 
PLATE II. 
Fic. 17. Young ovulate strobilus showing enveloping bracts, inner integu- 
ment, ind a gpeiies July 26, 1904. X47. 
Fic. 18. Ovulate nobihes showing bracts, integuments, nucellus with rudi- 
any ss chamber, and megaspore mother-cell; April 7, 1904. X24. 
Fic. 19. Tip of nucellus with pollen chamber containing a microspore; 
April 8, 1904. X 220. 
IG. 20. Megaspore mother-cell in synapsis; April 7, 1904. X 460. 
Fic. 21. Micropylar end of female gametophyte with oe initial 
Projecting into the space formerly occupied by the megaspore mother-cell; July 
26, 1904. X 460. 
