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42 DR. J. D. HOOKER ON WELWITSCHIA. 
DESCRIPTION OF THE PLATES. 
PLATE I. 
Fig. 1. Copy of a drawing of the entire plant, made by Don Ferdinand da Costa Leal for Dr. Welwitsch, 
said to be about 15 to 20 years old, and apparently from the specimen figured, Plate 11. fig. 1. 
Fig. 2. Copy of the coloured sketch made by Mr. Thomas Baines in Damara Land. 
PLATE Il. 
Fig. 1. Two views of the youngest specimen sent by Dr. Welwitsch, of the natural size, showing the leaves 
in an entire condition. 
Figs. 2 & 3. Side and end views of a more advanced specimen, also from Dr. Welwitsch, showing the 
laceration of the apex of the leaf; of the natural size. 
Fig. 4. Transverse section of the root of the same, showing an unusually regular arrangement of the 
root-bundles. 
PILATE III. 
Side view of Dr. Welwitsch's largest specimen, reduced to about half the natural size. A portion of a 
leaf is cut away to show the areolated surface of the stock. 
PLATE IV. 
The same, viewed from one end. To the left-hand side of the right-hand leaf, at its base, are seen the 
pits left by peduncles developed on the upper ridge of the stock, and below the leaf-insertion. 
Some pebbles are imbedded in the root, near its summit. 
PLATE V. 
Figs. 1-4. Much-reduced sketches of the largest specimens sent by Mr. Monteiro. 
Fig. 5. The large specimen sent by Mr. Andersson, also very much reduced. 
Prae Vl. Hermaphrodite flowers (p. 21). 
Fig. 1. Peduncle and cones of hermaphrodite flowers, immediately previous to the expansion of the 
flowers ; of the natural size. 
Fig. 2. The same, magnified about 2 diameters. 
Fig. 3. Bract of the peduncle, with imperfectly developed cone in its axis. 
Fig. 4. Imperfect cone, from the same. 
Fig. 5. Scale of the cone, with bud of hermaphrodite flower in its axis. 
Fig. 6. Flower-bud just before expansion, seen from the opposite side of fig. 5. 
Fig. 7. heat Er the inner perianth-lobe drawn back, showing the staminal tube and discoid apex of 
the ovule. 
Fig. 8. One i the inner perianth-lobes, showing the disposition of the spicular sclerogen-cells in its . 
Fig. 9. Moro UE UO depre 
