LEGUMIXOS^E 427 



paler beneath and glaucous ; leaflets emarginate, with a tooth in the 

 notch, or entire and cuspidate, with numerous alternate, ascending, 

 pale-coloured nerves ; stipules linear or linear-subulate, obtuse, 

 acute, or acuminate, soft, pale green, glandular-pubescent and villous, 

 fringed or ciliated with gland-tipped hairs, shortly adnate to the 

 stem by one edge and also the base of the petiole, but mostly below 

 the articulation ; petioles terete, glandular-hairy and villous, taper- 

 ing upwards from a stout articulated base. 



Nos. 1-4. Pinnately trifoliolate ; lateral leaflets narrowly obovate, 

 obtuse, entire, minutely cuspidate ; terminal leaflet larger and 

 broader, obtuse or minutely cuspidate ; all very shortly petiolulate. 



Nos. 5-7. Pinnately five-foliolate ; leaflets obovate, cuspidate or 

 emarginate, with a tooth in the notch ; terminal one largest. 



Caragana arborescens, Lam. 



Fruit a legume, cylindrical, sessile, terete or turgid, glabrous, 

 pale green, or straw-coloured when mature, dehiscing elastically 

 along both sutures and twisting longitudinally, glabrous internally ; 

 seeds many, or few by abortion. 



Seed transversely oblong, rounded and obtuse at both ends, 

 glabrous, shining, pale yellow ; testa coriaceous ; micropyle and 

 hilum contiguous on the ventral aspect above the middle ; raphe 

 elongated, forming a deep green line ; chalaza at the lower end very 

 conspicuous and prominent in the young growing seed, but shrink- 

 ing considerably and distinguishable in the mature seed by a dark 

 spot. 



Endosperm absent. 



Embryo large and occupying the whole interior of the seed, green 

 when mature ; cotyledons oblong or oval in outline, plano-convex, 

 and usually, if not always, unequal, and, together with the radicle, 

 conforming in outline to the interior of the seed, entire at the apex, 

 not auricled, but variously indented or impressed by the radicle 

 according to its position, lying in the slightly broader plane of the 

 seed, which is influenced by the shape of the legume, with their 

 edges directly or obliquely to the placenta ; radicle very short, 

 obtuse, compressed or subterete according to position, accumbent 

 or obliquely or wholly incumbent, very much shorter than the 

 cotyledons, and only reaching from their upper and basal end to 

 the micropyle near the upper end of the ventral aspect of the 

 seed. 



The different positions of the radicle are apparently due to 

 there being no defined and allotted space for it ; it is accom- 

 modated merely by being squeezed against the edges of both 



