MAGNOLIACEJE. 



141 



nate, petiolate leaves, whose blade is lyre -shaped, truncated at the 

 apex,' and divided on each side into four more or less marked lobes. 

 At the base of the petiole we observe two lateral stipules inserted 

 a little above it, and which, when the leaf is young, cohere by 

 their margins so as to form a completely closed sac, in which is 

 enveloped all the young branch above this leaf itself At this age 

 the petiole is bent down at its middle, and the blade has its apex 

 towards the axil, and the superior surface turned outwards. The 

 flowers are solitary and terminate the branches, surrounded in the 

 bud by bracts continuous with the series of leaves borne by the 

 branch.- The Tulip-trees may on the whole be defined as Mr/j/- 

 nolias with extrorse anthers, and samaroid carpels which separate 

 from the common receptacle. 



II. SCHIZANDEA SEEIES. 

 MiCHAUX was the first to make known in Europe a North 



ScJiizandra coccinea. 



Fig. 179. 

 Male flower. 



Fig. 180. 

 Female flower. 



American liana with regular monoecious flowers (figs. 179-181), 



iii. 202.— DC, Frodr., i. 82. — Spach, op. cit., 

 488. — De Cubieres, 3Iem. mr le Tulipier(}.SOS). 

 —Sims, But. Mag., t. 275. 



' This summit presents a small apiculus, which 

 is merely the end of the midrib, produced here be- 

 yond the parenchyma. Ciodkon [Ohsofvations siir 

 les Bourrjeons et sur les Feuilles dii L. Tulipifera, 

 Bull. Soc. Bot. de Fr., viii. 33, t. 1) attributes 

 the truncation of the apex of the blade to the 

 compression it undergoes during vernation while 

 " retained in a groove formed by the base of one 

 of the stipules and the axis." , Already, in 1815, 

 MiRBEii had given, in his Flementsde Fhysi- 

 olog'iB Ttijitale et de Botanique, a very exact 

 figure of the prajfohation of the Tulip-tree (t. 20). 

 Te£cul {Ann. Sc. Nat., ser. 3, xx. 296) has 



always seen the stipules joined together, howsoever 

 young be the leaves, which are folded along the 

 midrib, and arise before the stipules themselves. 

 This botanist has also described and represented 

 (t. 21, figs. 45-52) all the phases of the develop, 

 raent of the leaves and their stipules. 



2 If we examine the position of the sepals re- 

 lative to the five leaves below it on the branch, 

 the uppermost of these being, indeed, the bract 

 inserted immediately below the calyx, we see that 

 these five are quincuncially imbricated, and that 

 sepals 1, 2, and 3 are directly above leaves 1, 2, 

 and 3 respectively. This relation shows how it 

 is that here, as in cert tin Magnolias, there is no 

 sepal exactly opposite the bract below the flower. 

 The nature of the bract is not doubtful. It pre- 



