134 BOTANICAL GAZETTE [FEBRUARY 
24. JANSE, J. M., Les endophytes radicaux de quelques plantes javanaises. 
Ann. Jard. Bot. Buit. 14:53-201. pi. rr. 
25. Jonow; Fr., Die agora Humus bewohner Westindiens. 
Jahrb. Wiss. Bot. 16:415-449. pls. . 1885. 
, Die chlorophyllfreien cat ae Jahrb. Wiss. Bot. 
20:475-525. 1889. 
27. Miers, JOHN, On a new genus of plants of the family Burmanniaceae. 
Trans. Linn. Soc. 20:373-382. pl. 15. 1851. ~ 
, On Myostoma, a new genus of the Burmanniaceae. Trans. Linn. 
Soc. 25:461-476. 1866. 
29. MvuELLER, F., Notes on a new Tasmanian plant of the order Burman- 
niaceae. Bot. Centralbl. 45: 256-258. 1891. 
30. TREUB, M., Notes sur l’embryon, le sac es et Vovule. Ann. 
Jard. Bot. Buit. 3:120-128. pls. 18, 19. 1883. 
26. 
EXPLANATION OF PLATES VII-XI 
All figures, except 1, 2, 3, 4, 20, 21, 22, and 28, were drawn at the level 
of the table with the aid of a Spencer camera lucida under Spencer objectives 
16, 4, or 1.8 mm., and oculars 2, 4, or 8. he following abbreviations are used: 
b, bud; dr. enki e, epidermis; fa, floral axis; ii, inner integument; 0, 
outer integument; /t, leaf trace; /, fungus infected layers; m, microsporangia; ~ 
mr, main root; 0, ovary; p, phloem; Y, perianth; pw, perianth wall; rc, 
root cap; s, style; sr, secondary root; s’r’, second ey root; x, xylem. 
Fic. 1.—Side view of plant of Thismia americana, in situ; X 
Fic. 2.—View of flower from above; petals cut apart ES apex vor folded 
back; 4.5 
. IG. 4, “Aen from above of group of ain undisturbed in natural 
situation; the oldest flower appears at the right; 
IG. 4.—View from above of plants from aca the re has been removed; 
the white root portions are evident with their buds; x 2.6. 
Fic. 5,—Longitudinal section of central cylinder e root; xX 266. 
Fic. 6.—Cross-section of central cylinder of root; 66. 
Fic. 7.—Portion of root in longitudinal section, oe subepidermal 
fungus infected layers, and epidermis free from fungi; 2 
1G. 8.—Cross-section of central region of young erect axis, showing early 
phloem development ; X2 
Fig. 9— iagrammatic sroidenition of erect axis and bract leaves; the 
outlined portion of the proper is shown in fig. 10, of the leaf in fig. 12, with 
higher magnification; X35. 
IG. 10.—Detailed drawing of portion of cross-section of floral axis; one 
leaf trace supplies the next leaf; x 266. 
IG. 11.—Detail of — of cross-section of leaf, showing single, simple 
bundle; X 266. 
