Oct., 1921] BECHTEL — FLORAL ANATOMY OF URTICALES 
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Fig. 4. Transverse section through lower part of flower; ni . . . nf and n . . . rP, 
strands to perianth and to stamens respectively; d and d}-, abortive bundles. 
Ulmus campestris 
Fig. 5. Median longitudinal posterior-anterior section; bundles to stamens is) 
originate above (6) those to perianth (/>). 
Figs. 6, 7. Various lobing of perianth; i . . . 4 are strands to main lobes; a and h, 
branches or separations from the main strands; s, stamen position. 
Ulmus scahra 
Fig. 8. Longitudinal lateral section of flower; h, space between origin of stamen and 
perianth bundles; x, x^, abortive bundles of the perianth; d, abortive bundles above those 
to stamens; 0, the placental supply. 
Figs. 9, 10. Transverse section of flower; m . . . and n . . . n'^, bundles to 
perianth lobes and stamens respectively; x, x\ x~, abortive bundles of perianth; d, abortive 
bundles alternating with stamen bundles: t, continuation of floral axis; i, i\ i', dorsal 
bundles of 3 carpels; 0, the placental supply, 
Plate XVIII 
Figs, i, 2. Transverse sections above those of figures 9 and 10, Plate XVIT; letter- 
ing the same. Perianth bundles separate into 2 to 4 strands. 
Celtis occidentalis 
Fig. 3. Longitudinal section of flower; h, trace from stele of pedicel which separates 
into perianth {p) and stamen [s) strands; o, placental supply arises or separates from 
anterior carpel (i^) supply. 
Figs. 4-12. Transverse sections of flowers; in lower part of flower, stele is prominent 
in anterior and posterior regions; strands to anterior part of flower lead off, perianth (w) 
and stamen (w); I, i\ dorsal bundles of carpels; 0, bundle of placental supply; 0^ and 
lateral strands of the pistil. 
Fig. 13. Transverse section at base of styles, 0^ and not present. 
Plate XIX 
Morus alba, pistillate 
I, anterior, and i\ posterior carpel bundles; p, posterior and anterior, and p^, lateral sepals; 
0, placental supply. 
Fig. I. Median longitudinal section of flower in posterior-anterior plane. 
Figs. 2, 3. Transverse section through pedicel. 
Figs. 4-9. Transverse sections of a flower; 0+0, the union of two placental strands 
(as in Ulmus). 
Fig. 10. Longitudinal section of a staminate flower; b, strand composed of stamen 
and perianth supply; 1,1^, abortive carpel bundles. 
Madura pomifera 
Figs, ii, 12. Transverse sections through base of pistillate flower within the in- 
florescence axis; l, iS anterior and posterior carpel supply; p, perianth; 0, placental supply. 
Figs. 13-17- Flowers becoming distinct as well as the parts of each flower; 71, abortive 
bundles in the perianth parts. 
Figs. 18, 19. Longitudinal median anterior-posterior section of pistillate and staminate 
flowers respectivelv. 
Plate XX 
Cannabis saliva, pistillate 
br, bract; 5, bundle to bract; p, perianth; i, i\ traces to carpels; s, stamen; 0, bundle to 
placenta; x, abortive bundles. 
