654 



HISTORY OF THK VEOETABLE KINGDOSJ. 



MONOCOTYLEDONOUS PLANTS. 



MARANTACE^. 



Gonas 35. CannophyllUes. Ijeavcs simple, entire, tra- 

 versed by a very strong midrib; veins oblique, 

 simple, parallel, all of equal size. 



One species in a bed of coal supposed of 

 more recent origin than the old coal forma- 

 tion. 



ASPnODELE>E. 



Stems only known. 

 Genus 36. BacMandia. Stem covered by reticulated 

 fibres, giving rise to imbricated leaves ivhich 

 are not amplexicaul, and the petioles of 

 which are distinct to their base. 



One species in Stonesfield slate. Dr Buck- 

 land suggests the possibility of this being 

 the omentum of a cycadcous plant. 

 Genus 37. Clatliraria. Stem composed of an axis, the 

 surface of wliich is covered by reticulated 

 fibres, and of a bark formed by the complete 

 union of tho bases of petioles, wliose inser- 

 tion is rhomboidal. 

 One species in the green sand. 

 Leaves only hiown, 

 Gonus 38. ConvallarUes. Leaves verticillate, linear, with 

 parallel slightly marked veins; stem straight 

 or curved. 



Two species in tlie variegated sandstone. 

 Flowers only known. 

 Genus 39. AntJiolUlies. One species in the tertiary beds. 



8MILACE>G. 



Ucnus 40. SmilacUes. Leaves heart-shaped or hastate, 

 with a well defined midrib, and two or tliree 

 secondary ribs on each side, parallel to the 

 edge of the leaf; veins reticulated. 



One species in tlie lower fresh water for- 

 mation. 



PAI.M.E. 



Stems only known, 

 Uenos 41. Palmaciles, Stems cylindrical, simple, co- 

 vered by the bases of petiolated leaves, 

 petioles dilated and amplexicaul. 



One species in the lower beds of the Lon- 

 don clay formation. 



Leaves only knoitm. 

 Genus 42. Flabellaria. Leaves petiolated, flabelliform, 

 divided into linear lobes, plaited attheirbase. 

 One species in the plastic clay formation. 

 One in the lower fresh water formation. 

 One in the London clay. 

 One in the coal formation. 

 Genus 43. Pliosnicites. Leaves petiolated, pinnated; 

 leaflets linear, united by pairs at the base, 

 their veins fine, and little marked. 

 One species in the tertiary formations. 

 Genus 44. Neeggeraihia. Leaves petiolated, pinnated ; 

 leaflets obovate, nearly cuneiform, applied 

 against tlie edges of the petiole, tootiicd 

 towards tlieir apex with fine diverging veins. 

 Two species in the coal measures. 

 Genus 45. Zevgopliyllites. Leaves petiolated, pinnated ; 

 leaflets opposite, oblong, or oval, entire, with 

 a few strongly marked ribs, confluent at the 

 base and summit, all of equal thickness. 

 One species in the coal formation. 

 Fruit only known, 

 0«^n« 46. Cocot, Fruit ovate, slightly three-cornered, 

 marked with three orifices near the base. 

 Three species in the tertiary formation. 



FLUVIALIS. 



Genus 47. Zosterltcs, Leaves oblong or linear, marked 

 with a small number of equal veins, which 

 are at a marked distance from each other, 

 and are not connected by transverse veins. 



Four species in the lower greensand for- 

 mation. 



One in the lias. 



Two species in the upper fresh water for- 

 mation. 

 Genus 48. Caulinites, (Amphytoites, Desm.) Stem 

 branched, bearing semi-annular, or nearly 

 annular sears of leaves, alternate in two oppo- 

 site rows, marked witli little equal dots. 



One species in the London clay. 



MONOCOTYLEDONOUS PLANTS OF DOUBTFUL 

 AFFINITY. 



Stems only known. 

 Genus 49. Endogenites, This comprehends all fossil 

 endogenous stems that do not belong to any 

 of the genera characterised separately. It 

 is a mere provisional assemblage of objects 

 to be further investigated. 

 Several species from the tertiary strata. 

 Genus SO. Culmites, Stems articulated with two or 

 more scars at the joints . 

 Three species in the tertiary beds. 

 Gextaa5\. Stembergia, (Columnaria, ^temJert;.) Stem 

 taper, slender, naked, cylindrical, terminat- 

 ing in a cone marked by transverse furrows, 

 but with no articulations; slight remains cf 

 a fleshy cortical integument. 

 Three species in the coal formation. 

 Leaves only known. 

 Genus 52. Poacites. All monocotyledonons leaves, the 

 veins of which are parallel, simple, of equal 

 thickness, and not connected by transverse 

 bars. 

 Several species in the cnal formation. 

 Genus S3. Phylliies. (Potamopliyllites, lirony.) All 

 monocotyledonons leaves, the veins of which 

 are confluent at the base and apex, and con- 

 nected by transverse lairs or secondary veins. 

 One species in the lower fresh water for- 

 mation. 



Fruits only known. 

 Genus 54. Trigonocarpum, Two species in coal forma- 

 tion. 

 Genus ,o5. Amomocarpum. One species in tertiary beds. 

 Genus 56. Musocarpum, Two species in coal formation. 

 Genus 57. Pandanocarpum. One species in the tertiary 

 strata. 

 FLOWERING PLANTS OF UNCERTAIN 

 CLASSES. 

 Genus 58. jEtliopihyllum, Stem simple; leaves alter- 

 nate, linear, ribless, not sheathing, having 

 at the base two smaller linear leaflets, or, 

 perhaps,stipules;inflorescencespiked; spikes 

 ovate; flowers numerous, with a subcylin- 

 drical tube or inferior ovarium, and a bilabi- 

 ate pcrianthium, with subulate segments. 



One species in the new red sandstone. M. 

 Brongniart refers this to the monocotyle- 

 dons. 

 Genus 59. Feldmstacliys, Iflfloreseencc an oblong spike, 

 beset on all sides with sessile, contiguous, 

 suboonical flowers or fruits. 



One species in the new red sandstone. 

 Genus GO. Poltemyris. Inflorescence, ati'iininalfusifomi 

 (^pikc, with apprefscd closely imbricated 



