XATUKAL n I STORY OF PLANTS. 



From the rhizome arise hranches bearing alternate leaves. In C. 

 palusfris L.,' these are petiolate and have at the base a sort of sheath 

 like a membranous frill. The blade is cordate, suborbicular, or 

 reniform, feather veined, crenulate, plane ; while in other species 

 which have been made the type of the genus Psi/crophila,- this blade 

 has lobes projecting in the form of internal auricles. The rest of 

 tlie organization is entirely the same. The flowers are solitary 

 and terminal, or grouped on the a.xes as in the species belong- 

 ing to Troll'iKS proper. The fruits are 

 follicles, which dehisce by the inner bor- 

 der to set free numerous seeds covered 

 externally by a well-developed arilloid 

 production (figs. 41, 42) arising from the 

 great thickening of their external in- 

 teguments.^ 



Thus constituted,^ our genus Trol/in.s 

 also comprises Indian Alpine plants like 

 Calathodcs and aquatic plants — the true 

 Calfha which inhabit the cold or temperate 

 regions of both Worlds,* and P si/ crop /til a 

 found in the cold Antarctic Zone.^ 



On account of the multiovulate carpels, botanists 



Caltlta paht.'.tris. 

 Fio. U. Fig. 42. 



J^eed. Longitudinal 



section of seed. 



have agreed 



m 



> Spec, 784.— DC, Prodr., i. 44, n. 3.— Po- 

 pulago T., 7ns/., 273, t. 14, t. 115. The stylo 

 has two lateral stigtnatiferous lips. The ovules 

 have two envelopes. 



» DC, Syst., i. 307.— C Gat, Fl. Chil., i. 47, 

 t. 2. 



' Contrary to what is seen in many arillato 

 seeds where thf aril consists of a cellular thick- 

 ening of the outer coat, limited to the upjjcr part 

 (as is the case especially in tlie formation of 

 curunculaj in the JCuphorbiacce), in Callha it is 

 at the dialazal end that this hypcrtro])hy gra- 

 dually takes i)lacc ; so that tlie rest of the integu- 

 ment remains very thin in ])roportion towards 

 the hiluni and niicropyle. Figs. 41, 42 will illus- 

 trate tliis better than any possible description. 

 * fl. Eulrollius. Leaves much dis- 



sected. Flowers with a corolla, 

 I calyx caducous. 



TroUius. I 2. Jleqemone (Uunoe). The same, 

 Soctiona 5. \ but calyx persistent. 



Calathodea (HooK. & Tn.). 

 Flowers apetalous. Leaves 

 dissected. 



/4. Caltlia (L.). Aquatic plants. 

 I Flowers apetalous. Leaves little 



TroUius. ) cut up. Calyx persistent. 



Sections 5. 1 5 P»i/crophilia (DC). Same, but 



cunt. leaves with lobes projecting 



' inwards. Calyx caducous. 



* Grkn. & GoDit., Fl. Fr., i. 39.— Keichb., 

 Icon., iv. 101.— Hook. & Tir.. Fl. Ind., i. 39.— 

 A. GuAY, III., t. 10.— Bkntu. & MuKix., Ft. 

 Aust. i. 15. 



« C Gay, Fl. Chil., i. 47-51. -Hook. P., Fl. 

 Antarct., ii. 228, t. 84.— Wkdd., Chlor.And., ii. 

 301), t. 82. 



It is only with great hesitation that we have 

 placed (Adansonin, iv. r>7) the genus Anrmo- 

 nopsis S. & Zici'. {Fl. J<ip. Fain., 73, t. 1. — 

 A'averia Endl., Orn., su])\)\. iv. 30), altogether 

 unknown to us, near the dichlamydeous sirtions 

 of Trolliu.i. Its characters are as follows : Uegular 

 flowers in lax racemes, recalling those of a dmible 

 Anemone. They jh)ssc8.'< a calyx of sevend leaves, 

 the three outer sepiiloid, the inner oni"* j)etaloid ; 

 alK)ut twelve short Hcssile petals, having a msta- 

 riferous hollow in the thickened btue: indetinite 



