LLAVEA. 



[ 476 ] 



LOPHOPUS. 



The general arrangement of tbe secreting 

 cells is observed in sections made with 

 Valentin's knife. 



In many animals, as fishes, the loading 

 of the cells of the liver with fat, which in 

 man represents the morbid state of fatty 

 degeneration, is normal, and renders it a 

 matter of some difficulty to distinguish 

 clearly the outlines of the cells, which are 

 also very delicate. 



BiBL.' Kiernan, P/h7. Tr. 1833; KoUiker, 

 Mil-. Anatii.; H. Jones, Phil. Tr. 1846, 

 and 1840; Guillot, Ann. Sc. Nat. 1848; 

 Leidy, Sill. Jn. 1848 ; Beale, Liver, & Hoiv ; 

 Hering, Stn'cker^s Gewehel. i. 429 ; Kolats- 

 chewsky, Sch. Arch. 1877, xiii. 415 ; Frev, 

 Hist. 540. 



LLA'VEA, Lagas. — A genus of Pteridese 

 (Polypodiaceous Ferns). One species ; 

 Mexico. (Hooker, Syn. Fil. 144.) 



LOASA'CE.E.— A family of Dicotyledo- 

 nous Flowering plants, with stinging hairs 

 upon the epidermis. Loasa, Bartonia, and 

 Blumenhachia are often to be obtained in 

 gardens. 



LOCUST-BEANS.— The seeds of Cera- 

 tonia siliqua are so called. 



LOFTU'SIA, H. B. Brady.— A large fusi- 

 form arenaceous Foraminit'er, consisting of 

 a spiral lamina, secondary oblique longitu- 

 dinal septa, and tertiary vertical divisions, 

 making the internal structm-e labyrinthic. 

 In texture similar to the higher Trochcnn- 

 rnincp, Loftusia stands high amongst the 

 arenaceous forms, corresponding with Alveo- 

 lina in the Porcellaneous, and Fusidina in 

 the Hyaline group. Fossil in Persia. 



BiBL. Brady, Phil. Trans. 1869, 751. 



LOMA'RIA, AYilld.— A genus of Pteri- 

 deae (Polypodiaceous Ferns). 



L. Spicant, often called Blechnnjn boreale, 

 is British. Many other foreign species. 

 (Hooker, St/n. 174.) 



LONCH'I'TIS, PresL— a genus of Pteri- 

 dese (Polypodiaceous Ferns). Differs from 

 Pteris in the sori occupying the sinus ; 

 exotic (fig. 410). (Hook, 'Syn. 128), 



Fig. 410. 



Lonchitis pubesccnR. A pinnule with sori. 



Maguifled 10 diani8. 



LO'PHIUM, Fr.— A genus of Pyre- 

 nomycetes (Ascomycetous Fungi), remark- 

 ably distinguished by the form of the peri- 

 thecia resembling a bivalve shell with the 

 valves in situ (tigs. 411 & 412). The nu- 

 cleus contained within the carbonaceous 



Fig. 411. 



Fig. 412. 



Fig. 413. 



LophiuMi mytiliauiii. 

 Fig. 411. A perithecium, seen sidewise. 

 Fig. 412. The same, seen endwise. 

 Fig. 413. A perithecium cut open. 



Magn. 2.5 diama. 



perithecium consists of erect asci mixed 

 wdth paraphyses, containing minute spores, 

 and soon falling away into a powder. L. 

 mytiUnum, Pers. (figs. 411-13), occurs on 

 the bark or naked wood of fir trees. L. 

 datum, Carm., also occm's on fir wood. 



BiBL. Berk. Br. Fl. ii. pt. 2. 280 ; Fries, 

 St/st. 31yc. ii. 633 ; Siimma Veg. 401 ; Gre- 

 ville, Sc. Cnipt. Fl. pi. 177. 



LOPHOCO'LEA, Nees.— A genus of 

 Jungermannieee (Hepaticte), including J. 

 hidentata, L., and J. heterophylla, Schrad., 

 growing in moist situations, at the roots of 

 trees, &c. 



BiBL. Hook. Brit. Junyerm. pis. 30, 31 

 Br. Fl. ii. pt. 1. 122. 



LOPHOxMONAS, Stein.— A genus of 

 Flagellate Infusoria. 



Char. Free, ovate, spherical or fusiform, 

 with an anteiior tuft of long slender 

 flagella. 



Two species ; intestines of Blatta, &e. 

 (Kent, Inf. 321.) 



LOPHOPPI'ORUS, Br.— A genus of 

 Copepodous Entomostraca. 



L. indynis. In marine dredgings, Dur- 

 ham. (Biady, Copep.., Bai/ Sue. i. 121.) 



LOPHOPO'DIUM, Ktz.-A doubtful 

 genus of Oscillatoriaceas, allied to Amphi- 

 thri.c. 6 spec, on submerged stones and 

 posts. 



BiBL. Babenh. Fl. Fur. Aly. ii. 231. 



LOPH'OPUS, Dutuortier.— A genus of 

 freshwater Polyzoa, of the order Hippo- 

 crepia, and family Plumatellida?. 



Char. Polypidom sacciform, hyaline, ge- 

 latin lus, with a disk serving for attachment ; 



