ON NAIAS GRAMINEA DEL., VAR. DELILEI MAGNUS. 
| Fig. 33. paper nec section of -_ leaf of N. ee. Del., from Celebes; 
arged 139. Magnus, ‘ Beitrage,’ pl. vi. 
In Ties 31—33 the lebiing bundles are drvwn schematically : 
i = intercellular spaces, b — bast-cells. : 
34, es bast- 233 from the leaf of N. epi from Celebes; enlarged 
s, ‘ Beitrage,’ pl. vi., 
35. Mali ie of Nv. graminea ; ibe © ne Magnus, ‘ Beitrage,’ pl. iii., 
36. Transverse section of the stem of Caulinia alagane From 
‘Tavole per una Anatomia delle piante aquatiche,’ Paviatans; pl. vi., 
37. Surface-view of the outer cell. layer of the unripe seed of N. flexilis ; 
agnus, pee Cpl. Vs, 
38. Diagonal section 0: os nearly ripe seed-shell of N. flecilis : enlarged 
Ma 
agnus rage,’ pl. v., 
39—40. Diagonal sections = the still (?if not always) unripe seed-shell of 
m Cairo; enlar rg 
41. Diagonal seoticin of a quite ripe ieee shell of N. ites: from 
Cairo; enlarged 1 Samus , ‘ Beitrage,’ pl. v., fig. 12. 
GURES IN THE LET RESS 
All the figures are drawn from Reddish specimens of Naias graminea 
Del., var. Delilei Magnus, except when stated otherwise. 
AS ON: — are dy section of stem, drawn diagrammatically ; 
43 oo 44, N. graminea —Ends of leaves, oblige dentition; enlarged + 
45 and 46. N. flevilis—Spines on margins of leaves, from specimens 
ahi by Dr. Boswell, in Loch Ginny, near Blairgowrie, Perth- 
mlarged *3°, See ‘Journal of Botany,’ No. 154, 1875, 
47 to 49. graminea. —Spines on margin of middle portion of leaf; 
50. Ne ‘nino “Thoth 0 f leaf from one of mage prison 8 speci- 
s from pon is’ in his park at Kalocsa, Hungary ; enlarged 14°. 
51. N. ‘major. —Tooth of leaf sr0en plant collected near éoblenta, by Dr. 
52. N. graminea. = rge Tababiet from leaf of first pair; enlarged +. 
53. N. gra vse —Usual form of leaf-sheaf from leaf of first pair; en- 
54, N. graminea,— —Usual form of leaf- chest from leaf of first pair, with 
irregular-sized auricles ; enlarged 
55. N. graminea.—Leaf-sheaf from leaf 3s ‘second pair; enlarged 1+. 
56 and 57. N. flexilis—Leaf-sheath from Scotch ——, enlarged 1°. 
: i “f f i ‘lar: 156 
59. N. flexilis—Spines on margin of auricles from Loch Cluny. con! are 
the first four which occur on =v left shoulder a one 57, above the 
minute spine, nearest the base of the sheath ; sp os 
60 to 65. N. Abepeoess a.—Transverse 3 wate of ata: go near the 
; enlarged 
summit; enla 
N; alaganensis.—Libriform cells in margin of leaf, from Malinverni’s 
Italian specimens ; enlarged » 36, The libriform cells are the long 
cells bse well. content nts. 
67. N. graminea.—Young antheriferous and pistilliferous flowers growing 
side by aides nlavesa 1s, 
68. N. gramine a.—Older oe and pistilliferous flowers growing 
side by side; enlarged 18 
inea.—P 
6 gramine rtion of ¢ entral infloresence ; e 
70. N. graminea.— ferous hs ower with contiguous bracts; olaigal i, 
gr nea. —Young pistilliferous ae enlar 
72 and 73. N. graminea.—Young pi us flowers, hanes the stig- 
gra therifero s flowers; enlarged 
6. N. graminea.—Youn Am. omar Beats, showing immature aid: : 
enlarged; +». 
