792 



MACROSCOPIC AND MICROSCOPIC CHARACTERS OF PLANTS. 



petals ovate-oblong with a wavy margin, wider than the 

 sepals and colored like them ; labellum obscurely 3-lobed, 

 the basal part convolute around the column into a tube, 

 exterior white, the interior pale yellow with purple lines, 

 the anterior part spreading with crisped margin and of 

 a rich crimson-purple; column clavate, bent, greenish; 

 pollinea 8 in 2 series of 4, very small. 



Cattleya mossiw Hook. (C. mossiw Parker) (Pollen 

 Parent ) . — Stems oval, slightly compressed. Pseudobulbs 

 surrounded by a membranaceous sheath and ridged when 

 old. Leaves tough, leathery, dark green above, paler 

 beneath, persistent. Peduncles arise from green flat- 

 tened sheaths, about 2 and a half inches long, 3-flow- 

 ered. Flowers large ; sepals lanceolate, rose-lilac ; petals 

 ovate, wider than the sepals, with a wavy margin, of the 

 same color as the sepals ; labellum obscurely 3-lobed, the 

 basal part convolute around the column into a tube, 

 externally of the same color as the petals, internally 

 towards the center, pale yellow obliquely striated with 

 purple, the margin like the petals, the upper or anterior 

 part divided into two areas, the one toward the posterior 

 being a yellow band that extends obliquely towards the 

 6ides ; that nearer the apex being a rich velvety purple 

 area mottled with lilac and at the margin becoming pale 

 lilac, the margin is crisped and cleft rather deeply at the 

 middle of the anterior lobe ; column club-shaped, grooved 

 beneath, and expanded into two wing-like margins; 

 pollinea are 4, in 2 pairs, large, compressed, each with 

 a ribbon-like tail. 



Lwlio-Cattlcya canhamiana (Hybrid). — Stems oval, 

 compressed, smooth. Pseudobulbs inclosed by scaley 

 bracts, and ridged when old. Leaves tough, green, 

 leathery, persistent. Peduncles arise from green, leath- 

 ery, flattened sheaths 5 inches in length, bearing in this 

 specimen 3 flowers. Flowers large; sepals are oblong 

 lanceolate and light rose in color; petals wider than 

 the sepals, of the same color, and have a wavy margin ; 

 labellum obscurely 3-lobed ; basal part convolute around 

 the column ; on the interior, towards the center, orange 

 with oblique brown stripes, the margin white, on the ex- 

 terior of the same color as the petals, the anterior part 

 broad with a crisped margin and deep crimson-purple, 

 paler at the margin, and cleft slightly in the middle of 

 the anterior lobe ; column white with light green on the 

 sides ; pollinea unequal in size, 4 being large, resembling 

 those of the Cattleya parent, and 4 much smaller, like 

 those of the La?lia parent. 



Comparisons of the Macroscopic Characters. 

 Roots. 



The roots are cylindrical and fleshy, similar in all 

 three plants, and arise from a point on the rhizome just 

 below the pseudobulb. The rhizomes are green, about 

 half an inch in diameter, and lie above the surface of the 

 ground, forming a connection between the pseudobulbs. 



Pseudobulbs. 



The pseudobulbs are the thickened first, second, and 

 third internodes. The first and second are only slightly 

 thickened, forming a sort of slender stem; the third is 

 very much thickened and elongated. They are larger 

 in Lcclia purpurata than in C. mossice. Those of the 



hybrid are smaller than those of either parent, but this 

 may have been due to the plant itself being in a rather 

 poor condition. (Table J 11.) 



Table J 11. — Lengths and widths of pseudobulbs. 

 L. purpurata: Length 22.4 cm.; greatest width 3.3 cm. 

 C. mossiw: Length 16 cm.; greatest width 2.5 cm. 

 L.-C. canhamiana: Length 15.6 cm.; greatest width 2.4 cm. 



The old pseudobulbs of L. purpurata are almost 

 smooth, the outline of the transverse section being only 

 moderately wavy ; those of C. mossiw are deeply ridged ; 

 and those of the hybrid are in extent of ridging between 

 those of the parents, but nearer L. purpurata. The 

 pseudobulb is sheathed by 3 small green leaves which 

 gradually dry out and become thin and membranaceous. 

 At the top of the pseudobulb there is given off one 

 mature leaf, which in both parents and hybrid is long, 

 green, and leathery. (Table J 12.) 



Leaf. 



The leaves are very nearly alike in the three plants, 

 except in size. Those of L. purpurata are much longer 

 and a little broader than those of C. mossiw, and in 

 the hybrid they are almost exactly mid-intermediate in 

 length, and between the parents in width, but much 

 nearer the width of L. purpurata. 



Flower. 



The flowers arise from the axils of very small bracts 

 on a cylindrical flower-stalk. This stalk with its buds 

 is inclosed in a sheath which in L. purpurata is large, 

 compressed, green, and leathery, and in C. mossice and 

 the hybrid is small, yellowish green, and more dried-out 

 looking. The flower-stalk is much longer in L. purpurata 

 than in C. mossiw, and in the hybrid, though between the 

 two in length, it is nearer 0. mossice. (Table J 12.) Of 

 the plants examined, L. purpurata bore 5 flowers and C. 

 mossiw and the hybrid each 3. The pedicel is shorter 

 in L. purpurata than in C. mossice, and longer in the 

 hybrid than in either parent. (Table J 12.) 



Table J 12. 



Lengths and widths of leaves of pseudobulbs: 



L. purpurata: Average length 30 cm.; average width 5.8 cm. 



C. mossice: Average length 22.3 cm.; average width 5.3 cm. 



L.-C. canhamiana: Average length 26.6 cm.; average width 

 5.7 cm. 

 Lengths of flower-stalks: 



L. purpurata 26 cm. 



C. mossiw 15.2 cm. 



L.-C. canhamiana 18.7 cm. 

 Lengths of pedicels: 



L. pupurata 5.1 cm. 



C. mossice 6.2 cm. 



L.-C. canhamiana 8 cm. 



The sepals of L. purpurata are all similar ; they are 

 long and narrow and recurved toward the base and curved 

 upward toward the apex ; and without trace of a nectary 

 on the apex. Those of C. mossiw have a longer dorsal 

 sepal and sickle-shaped lateral ones; they curve over at 

 the apex; and each has a green nectary on the lower 

 surface of the apex. In the hybrid there are the com- 

 bined characters of both parents. The dorsal sepal is 

 a little longer than the lateral ones, but the difference 

 is not so great as in C. mossiw. The lateral sepals are 



