DENDROBIUM. 357 



D. PIERARDII, lioxb. — A delicately pretty species of deciduous habit, useful 

 on account of its floweringduring th© winter and spring months. The stems are 

 long (in its native country 6 feet), moderately slender, terete, drooping, furnished 

 with lanceolate acuminate leaves, and flowering in the same way as D. superbum, 

 that is in fascicles of two blossoms from 

 each node through the greater part of 

 the length of the stem. The flowers are 

 transparent blush-white, with a spathu- 

 late pale yellow lip, having the involute 

 claw . feathered with purple lines ; they 

 last three weeks in beauty. It requires 

 the same treatment as D. superbum. — 

 India: Chittagong. 



'Fia.—Bot. Mag., t. 2584 ; Hook. Ex. Fl., 

 t. 9 ; Loddigos, But. Cub., t. 750 ; Bot. Reg., 

 t. 1750: Juurn. of Hurt., 1889, xviii. p. 293, 

 f_ 4g_ DENDROBIUM riERAEDII. 



D. PIERARDII LATIFOLIUM, flbri.— In this variety the stems are stouter 

 and darker in colour, and the flowers, though of the same form and colour, arc 

 much finer than in the type ; it blooms in April and May. It requires the sartie 

 treatment, and is a useful plant for exhibition. — India. 

 Fig. — Floru des Serres, t. 955. 



D. PITCHERIANUM, Ec7i6. /.— This is supposed to beanatural hybrid between 

 B. primuliwwm and D. nobih. It was described by the late Professor as follows : — 

 " The flowers are equal to those of a good D. primulinum ; both sepals and petals 

 are much like those of that species, as they are rather narrow and straight ; the 

 ligulate blunt sepals are whitish, rosy, with fine purple tips; the petals are 

 broader, with a deep purple tip, and a broad distinct rosy mid-line from the tip to 

 the base. It is an exceedingly curious and rare fact, that the colours of the fiowers 

 are far deeper outside ; the lip is very interesting ; from a short stalk, green at 

 the base, it is enlarged into a heart-shaped semi-oblong sub-acute body. This, 

 however, is the outline after artificial expansion, and it answers well the outline 

 of the lip, not of D. primulinum, but of B. mobile. Naturally the lip is involute at 

 the base and sub-acute before the apex, thus making a sort of a goitre with a flat 

 surrounding margin. Its colour is light sulphur. The callous abrupt line in 

 the middle of the disk before the base is whitish. The apex of the lip is purple; 

 and there are dark purple, nearly parallel stripes on both sides of this callous 

 part. Both sides of the surface of the lip are most densely covered with very 

 short hairs" (Gardeners' Clvronicle, 3rd ser., 1888, iii. p. 392).— Jwdia. 



D. PLATYCAULON, J^o^/■e.— This species resembles B. lamellatim, but the 

 flowers are larger, and it differs in the shape of the lip. The flowers are said to 

 be "over an inch in length and straw-coloured." It was imported by Messrs. 

 Sander & Co.— Philippine Islands^ 



D. POLYPHLEBIUM,, Bchb. /.—This is supposed to be a natural hybrid between 

 B. Fierardii and B. rliodopterygium, which latter it much resembles. It wa,s 

 discovered. by Major-General B. S. Berkeley, and resembles in growth B. Fierardii 



