102 REFERENCES CONCERNING GERANIACEAE. 



7. On the stvucture, dissemination and self-planting of Erodittm fraits see Asclierson : Jahrb. Berl. Gart., i, 3l.'l, pi. 6; 

 August (see Hanstein) ; Bischoff : Lelub Bot., ii', 470 ; Cooke : Freaks and Marvels of Plant Life, 281 ; F. Darwin : Trans. 

 Linn. See, 2 ser., I, 135; DeCandoUe : Physiol. Vfig., II, — ; Delpino: Peosieri, 11; Goodale : Common Plants, 37; Gray: 

 Amer. Journ. Sci. and .4rts, 3 ser., xi, 158; (August and) Hanstein: Sitzber. naturh. Ver. Rheinl. u. Westph., 18C8, 95; 

 Bot. Zeitung, 18G9, 530 ; Hildebrand : Jahrb. wiss. Bot., ix, 2G5, pi. 25 (referred to as pi. 3), f. 83-7 ; James : Bot. Gazettei 



IV, 209; Lubbock: Pop. Sci. Monthly, xix, 36-1; Flowers, Fruits and Leaves, 88 (from Fortnightly Review) ; Macloskie : 

 Nature, xxv, 174; Mallet: Mag. Nat. Hist., ix, 22, 10 figures: Mescliajew : Proc. Assoc. Naturalists and Physicians, St. 

 Petersburg, 1880, 19-20 (Just, viii', 243); Nobbe : Haudl). Samenkunde, 48G, f. 323; G. Rons: Ann. Soc. Bot. de Lyon, 

 1873, 25; Compt. Rend. Assoc, fran^aise, ii, 582; S:iclis : Text Book, 841; Stearns: Amer. Naturalist, xiii, 413, f. 1-7; 

 Steinbrinck: Bot. Zeit., 1878, 379, pi. 13, f. 16; Wichura: Flora, 1852, GG, pi. 4, f. 1-2; Zimmermann: Jalirb. wiss. Bot., xii, 

 570. Also Huth: Monatl. Mitt. nat. Ver., Frankfurt, 1884, 87 pi. 2 (Just, 1884', C85). 



On plumose fruits ot Monsnnia see Ascherson, (. c. The dissemination of Pelargonium is discussed by Delpino: Pensi- 

 eri suUaBioL, 11; F.Darwin: Tr. Linn. Soc, Bot., 2 ser., i, 165, pL 23, f. 5; Hildebrand: Jahrb. wiss. Hot., ix, 268, pi. 25, f. 

 39, 47-8; Midlet : Mag. Nat. Hist., ix, 23; Stearns: Am. Nat., xiil, 416; Steinbrinck: Bot. Zeit., 1878, Gil; Zimmerraann : 

 Jahrb wiss. Bot., xii, 571, pi. 36, f. 25-8. In this genus the contraction of the awn depends largely upon the thick- 

 ened epidermal cells, while torsion is effected by the meclianical fibres. According to Stearns, Pelargonium fruits are le.ss 

 readily self-planted than those of Erodium. Several observers have noticed that tlie fruits of Erodium, like those of 

 Stipa, etc., are injurious to animals when eaten, and may even penetrate the fiesli when they become entangled in their 

 hair. See various places in Nature; Huth : Kosmos, ix, 277, etc. 



For descriptions of the seed-coats see Marloth : Engler's Bot. Jahrb., iv, 237. 



The cotyledons of a number of species are described by Godron (Rev. Sc. nat., Sept., 1877) who bases a series of groups 

 of species on their form. 



8. On the morphology of the Limnantheae see Baillon, I. c. ; Almquist: Bot. Notiser, 1879, 109, etc. The movements of 

 the stamens, referred to above, are also noted by Heckel : Comptes Rend., 1878, i-xxxvn, — ; Just, vi', 317. On the 

 anatomy of the Embryo see Flahault: Ann. Sc. nat., 6 sfir., vi, HI, pi. 3, f. 21. 



9. On the leaf movements of Oxalideae see Baillon : Hist, des Plantes, v, 24 ; De Brignoli (see Morren) ; Bruce : Philos. 

 Trans., 1785, lxxv, 356; Cooke: Freaks of Plant Life, 243; Darwin: Power of Movement in Plants, various places; 

 Kolreuter: Annals of Bot., il, 2; Lynch: Journ. Linn. Soc, Bot., xvi, 231-2; Masters: Pop. Sci. Rev., vii, 26: Morren: 

 Bull. Acad. roy. Sc. Belg., vi', 68, transl. Ann. Nat. Hist., iv, 388; Pfelfer: Physiolog. Untersuchungen, 1873, 74; Period. 

 Bewegungen Blattorgane, 1875 (Just, iii, 795); Pflanzenphysiologie, ii, 238 ; Virey: Journ. de Pharmacie, Paris, May, 

 1839, 289, criticised l)y Morren, I. c. 70. 



For phyllodia see Zuccarini : Monogr. Amer. Oxalisarten, 10, N:ichtrag, 189; Hildebnmd : Flora, 1875, 324, pi. 8, f. 7; 

 Bot. Register, xxvii, pi. 41. 



10. On the floral structure and pollination of Oxalis see Axell : Anordningarna, 12, 79, 106; Baillon: Adansonia, vii, 97 

 (0. corniculata) ; Bennett: Journ. Linn. Soc, xvii, 275 (cleistogamous flowers of 0. acetosella) ; Caspary : De Nectariis, 

 p. 54, f. 20 (nectary of 0. acetosella) ; Darwin : DiHTerent Forms of Flowers, various passages referring to a number of spe- 

 cies; Delpino: Ulteriori Osservazioni, ii''', 94 (nectar glands) ; Fournier: Fficondation, 51, 59 (cleistogamous flowers and 

 order of dehiscence of stamens); Fritsch: Beobachtuugen, 24, 25, 2G (time of opening and closing of flowers of 0. 

 acetosella and 0. stricta) ; Henslow ; Trans. Linn. Soc, 2 ser., i, 359, pi. 44, f. 13, 14; Pop. Sci. Rev., xviit (O. acetosella 

 a.niXO. cortiiculata); Hildebrand: Geschlechtervertheilung, index; M )natsber. Berl. .A.kad., 18()6, 369; Bot. Zeit., 1871, 

 415, 431 ; Bot. Zeit., 1887, 1, 17, etc. (heterogony or homogony of many species, and experiments on their fertilization) ; 

 Meehan : Proc. Phil. Acad., 1880, 350 (c[eistogaraous flowers of 0. acetosella) ; Michalet : Bull. Soc. Bot. France, vii, 465 

 (cleistogamous flowers of O. acetosella); Mohl : Bot. Zeit., 1863,312 (cleistogene flowers ot acetosella) ; Fritz Mulier: 

 Jenaische Zeitschrift, 1871, 75 (0. Begnelii [=0. Catherinensis']) ; Roth rock : Amer. Naturalist, i, 71 (cleistogamous flowers) ; 

 Soyer-Willemet : Le Nectaire, 37 (nectar glands) ; Thomson : Trans. Bot. Soc. Edinburgh, xiv, 102 (0. corniculata and O. 

 Magellanica in New Zealand); Trelease : Amer. Nat., 1882, 13 (0. violacea) ; Treviranus : Bot. Zeit., 1863, 147 (cleistoga- 

 mous flowers of 0. acetosella). 



11. On the seed structure and dissemination of Oxalis see Baillon : Adansonia, xi (Just, iv, 461, 503) ;"Hist. des Plantes, 



V, 24; Bischofl': Lehrbuch derBot., ii', 471) ; De Candolle : Physiol. V6g.,ii, — ; Errera and Gevaert : Bull. Soc. Bot. Belg., 

 XVII, 96, 98 ; Elrod : .'imer. Naturalist, xiii, 95 ; Hildebrand : Jahrb. wiss. Bot., ix, 236 ; Lohde : Entwick. und Ban Samen- 

 schalen, 17, pi. 1, f. 10; Marlott : Engler's Bot., Jahrb. iv, 243; Nobbe: Handb. Samenkunde, 450, 487; Peck: Plants of 

 Mount Marcy (1880), 406; St. Hilaire: Plantes usuelles des Brasiliens, pp. 3-4 of text to pi. 43; Zimmermann : Jahrb. wiss. 

 Bot., xii, 573, pi. 36, f. 33; Znccarini : Nachtrag Amer. Oxjilisarten, 193. Also, Gibson : Harper's Mag., Oct., 1885,688; 

 and Lojacono: Nuovo Giorn. Bot. Ital., xiv, 97 (Just, 1882', 521, where exalbuminous Oxalis seeds are discussed. 



Tlie liistology of the embryo is discussed briefly by Flahault: Ann. Sc. nat., 6 s6r., vi, 115. 



12. On the general histology of Impatieus see Beyse : Nova .'Vcta Leop. -Carol. Acad., xi.m, 181. 



The foliar (exlr:uiupli;d) nectar-glands are con.sidc-red by Bonnier: Ann. Sc nat., 6s6r., vm, 98; Delpino: Prodr. Monog. 

 Piante formicarie, 188G, 3G; lierner : Flowers and their Unbidden Guests, 137; Reiid-ce : Bot. Zeitung, 1874, 59; Jahrb. 

 wiss. Bot., X, 1G2. 



For the pollination of the genus see Allen: Proc. Essex Inst., iv, 53 (humming birds at /. fnlva) ; Axell: Anordningarna 

 (cleistogamy, 12, 79; protandry, 106); W. W. B:uley: Bull. TorreyBot. Club, vi, 173 (perfonition of I. fulva by Dombiis) ; 

 Baillon: Bull. Soc. Linn., Paris, 1881, 286 (Delpino: Tlivista Bot., 1881, 37; Just, i.x', 518) (/. Humholtiana pollinated by 

 birds); Beal : Am. Nat., xiv, 201; Bennett: Journ. Linn. Soc. Bot., xiii, 147, pi. 3 (Journ of Botany, ix, 376); Pop. Sci. 



