REFERENCES CONCERNING GERANIACEAE. 103 



Rev., 1873, 345; Jourii. Linn. Soc, xvii, 27C (cleistogamous flowers of 7. nolitangere .and /. fulvn) ; Darwin : Cross- .and 

 Self-Fertilization, index ; Different Forms of Flowers, 328; Delpino : Fecond. Piante Antoc;irpee, 30 {[. balmmina) ; Ulte- 

 riori Osserv.izionI, ii- (early falling of aiitliers, 1G3, 172; I. scapiflord, etc., pollinated by Lcpidoptera, 274; 7. iioliutiii/ere 

 binl pollinated, 330) ; Desvaux : Le Nectairc, 103 (nectary) ; Errera and Gevaert : Compt. rend. .Soc. Bot. Bel"., xvii, DC. 

 (cleistojianiy) ; Gravis: Compt. rend. Soc. roy. Bot. Belg., Oct. J), 1880 (cleistogamous flowers of I. iioUtaiigere) ; Gray: 

 Genera PI. U. S., il, 134; Araer. Journ. Sci. and Arts, 3 ser., xiv, 497 (cleistogamous flowers) ; Ilenslow: Pop. Sc. Rev., 

 xviii,— ; Trans. Linn. Soc, Bot. 2 ser., i, 3G0 (I. ;)Oce(^i/ra self-fertile) ; Hildebrand : Farbeii der IJliirhen, 18 (color-vari- 

 ations in /. halsamina) ; Geschleclitervertlieilnng, 18 (protandry) ; A. de .Jussieu : Monogr. Malpighiac6es, 1845, 85 (cleis- 

 togamous flowers discovered by Wedde!) ; Von Mohl ; Bot. Zeit., 1863, 313 (cleistogamous flowers of 7. luiHtatu/erp.) ; Loclie : 

 Bull. Soc. bot. de France, xxiii, 367 (cleistogamy) ; Miiller: Befruclitung der Blumen, 170; Weitere Bvobaclitungen, 219; 

 Fertilization of Flowers, 160 (7. nolitanyerti) ; Snyder: Amer. Nat. xiv, 126 {l.falvtt bird-pollinated) ; Trelease: Bull. Tor- 

 rey Bot. Club, vii, 20 (perforation of I. fttlm) ; Weddel,- see Jussieu. 



The dissemination of hnpntiens is considered by Bischoff: Lehrbucli fler Bot. ii', 470; Hildebrand: .lalirb. wiss. Bbt., 

 IX, 238; Lolide, I.e.; Nobbe : Handb. Sameukunde, 487, etc. 



For the structure of the seed-coats see Lohde : Entwickelnng nnd Ban einiger Samenschaleu, Inaug. Diss. Leipzi" 

 1874, 14, pi. 1, t 6-9; Strandmark : Bidr;ig till Kaunedonien oni Froskidet's Byggnad., Akad. .Vfhandl., Lund, 1874, 29, f. 23.' 



The histology of the embryo is described by Flahault : Bull. Soc. bot. de France, xxiv; \\m. Sc. nat., 6 ser., vi. 111- 

 Gerard: Ann. Sc. nat., 6 ser.,xi, 298, 331, pi. 16; Reinke: Unters. ii. Waehsthum nnd Morpliol. der Wiirzeln, 1871. 



13. The principal liter:iture concerning the pollination of Pelarr/otiium will be found in Beal : Amer. 'Naturalist xiv 126 

 (visits of humming-birds); Darwin: Cross- and Self-Fertilization, various places, and Origin of Species, 145; Delpino: 

 Ulteriori Osservazioni, ii*, (papilionaceous flowers of P. nUaefolium, 72, 78, 262; protandry of umbels, 158; early filling 

 of ivnthers, 163; P. nochtrnumtind lohnlum nioth-pollinaled, 274-5; visits of birds, 334) [see also Bot. Mag., xi.v, no. 1986, 

 on nocturnal fragrance]; Fecond. Piaute Antocarpee, .iO; Difesa Dicogamia, 212; Fournier: Fecondation, lis (protandry) ; 

 Ilenslow : Trans. Linn. Soc, 2 ser., i, 358-9 ; Mirbel : Physiol, veget., 269, pi. 42, f. 6 (nectary) ; Roth : Beytriige, 1783, ii, 70 

 (nectary); Soyer Willemet ; Le Nectaire, 37 (nectary); Sprengel : Eutdeckt. Geheimniss, 340-4 (P. ?acent»i, jowi/e and 

 quercifiilium) ; Trelease: .\mer. Bee Journal, 1880, xvi, 137 (structure of nectary, with figures of papilhie) ; Amer. Nat- 

 uralist, xiv, 362 (visits of birds) ; Wallace: Tropical Nature, 275 (self-fertile island species) ; Weihe : De Nectariis, 26, 

 39 (nectary) ; Westwood : Modern Classification of Insects, ii, 541 (visits of Pangonia rostrata to flowers). 



In addition to the references on fruit given above see Delpino ; Pensieri, 11; Stearns: Amer. Naturalist, xiii, 416, on 

 dissemination; and Strandmark: lUdr. Kiinned. Froskalet's Byggnad., 29, on seed-coats. 



For the most important literature relating to the pollination of Tropaeohnii see Behrens : Flora, 1879, x.yxvii, 25, 

 14,5-153, pi. 3 (nectary); Darwin: Cross- and Self-Fertilization, index; Delpino: Ulteriori Osservazioni, u', (T. Irii-nlor, 

 251 ; T. mains, 265) ; von Freyhokl : Nova Acta Leop. -Carol. Akad., xxxi.k, no. 1 (T. peiWiphijUnm) ; Lubbock : British Wild 

 Flowers, 75 {T.majiis) ; Meyen : Secretionsoigane, 52 (nectary) ; Sprengel : Entdeckt. Geheimniss, 213 (T. majus). On the 

 seeds, see llofmeisler: Embryobildung der Phanerogamen, 93, and Slrandin:uk : Bidr. Kiinned. Froskalcfs Bvygnad., 30. 



MEMOIKS BOSTON SOC. NAT. niST., VOL. IV. 15 



