290 ON SEEDLINGS 



Leaves very similar to those of L. perenne, sometimes opposite (as 

 in the first two to three pairs), tapering to the base in the seedling 

 stage, ultimately more strictly sessile, generally one-nerved, pale green. 



Nos. 1 and 2. Only 1 mm. above the cotyledons, subsessile, 

 7'5 mm. long, 3 mm. broad, oblanceolate, subacute at the apex, 

 entire, with distinct midrib, glabrous, thin, light greyish-green. 



Nos. 3 and 4. Similar. 



Linum campanulatum, L. 



Hypocotyl mostly subterranean, tapering indistinguishably into 

 the root. 



Cotyledons obovate, otherwise as in L. monogynum, petiolate ; 

 lamina 7' 5 mm. long, 5 mm. broad ; petiole flattened or slightly 

 grooved above, convex on the back and subscabrous, 3' 5 mm. long. 



Stem herbaceous, erect, terete, glabrous, brown ; 1st internode 

 1*7 cm. long ; 2nd 3 mrn. ; above this 1 mm. each or crowded. 



Leaves tapering to the base, trinerved from base almost to apex, 

 obscurely alternately penninerved above the middle, opaque, deep 

 glaucous-green on both surfaces, crowded, ascending. 



Nos. 1 and 2. Small, opposite, spathulate, obtuse, apiculate. 



All above this obovate, obtuse, apiculate, crowded. 



HUMIRIACE.E. 



Benth. et Hook. Gen. PI. i. 24(5. 



The five-, rarely six- to seven-celled ovary contains a soli- 

 tary, pendulous, anatropous ovule in each cell, or two, rarely 

 three, in Vantanea, while Humiria has sometimes two super- 

 posed ovules. The raphe is ventral. The fruit is drupaceous 

 with a bony endocarp, one- to three-celled and -seeded by 

 abortion, and indehiscent. Where two seeds occur in a loculus 

 of Humiria they are separated from one another by a spurious 

 transverse septum. The seeds are oblong, with a membranous 

 testa, and contain a copious, fleshy endosperm. 



The embryo is straight in the axis of the endosperm, and 

 has short, blunt cotyledons and generally an elongated, 

 superior radicle. 



The Order contains about twenty species of large or small 

 trees, with alternate, entire or crenulate, exstipulate leaves. 



