46 ENGLISH 
HISPAN growing on soil (terrestrial) [f980, 1006, 51090]. 
1063 tessellated — checkered; i.e., in a pattern of squares; applied to the basal membrane of 
the peristome of Tortula [f981, g687, 875, s1091]. 
1064 tetrad — a group of 4; i.e., spore tetrad [f982, g1007, s1093]. 
1065 tetragonal —- four angled [f984, g1009, 1070, $1095]. 
1066 tetrahedral — four sides; e.g., apical cell of most leafy liverworts [f983, g1008, 1094]. 
1067 tetrestichems — with structures in four vertical rows; e.g., leaves [f985, g1071, s1096]. 
1068 tl lyptra (pl. calyptrae) — see shoot calyptra [f133, g962, s153]. 
1069 thallose — - of or pertaining to a thallus; often used in conjunction with a prothallial 
sporeling [f989, 21011, $1080]. 
1070 t (p. thalli) — a more or - flattened, gametophyte, not differentiated into a stem 
imple thallus) [f986, g1012, $1077]. 
1071 theca (pl. thecae) -— .the spore-bearing portion of a moss capsule (see urn; opposed to 
hypophysis) [f990, 1013, $1084]. 
1072 tmema (pl. themata) — abscission cell; a cell that ruptures to set free a moss gemma 
[f168, g1014, 1099]. 
1073 tomentose — woolly, densely radiculose; beset with tomentum [f994, g333, s1102]. 
1074 tomentum (pl. tomenta) — a felt-like covering of abundant rhizoids, on some stems or 
rarely leaves; e.g., stems of Dicranum, Breutelia [f995, g-, 1101]. 
1075 tortuose — irregularly bent or twisted; e.g., leaves of Tortula when dry [f996, g1057, 
$1103]. 
1076 trabecula (pl. trabeculae) — projecting cross-bars formed from horizontal walls on either 
face of arthrodontous peristome teeth (cf. appendiculae); also strands of cells bridging air 
spaces within some capsules [f1001, g126, $1105]. 
1077 trabeculate — cross-barred [f1002, g816, s1104]. 
1078 transfer cells — specialized inus at the gametophyte/sporophyte interface characterized 
by highly invaginated walls a enzyme activity [f179, g1019, s210]. 
1079 transverse — acr 065; perpendicular to to ibo Mni axis of a plant or organ; e.g., transverse 
leaf insertion [f1004, g815, s1107]. 
1080 trifarious — having three ranks of leaves (cf. tristichous) [£1005, g236, s1110]. 
1081 trifid — divided into three parts or lobes; e.g., Tritomaria leaves [f1006, g238, s1111]. 
1082 trigones — generally triangular or circular intracellular wall thickenings, found at the 
point where three (or more) cells meet; especially common in leaf cells of liverworts (see 
collenchymatous) [f1007, g245, s1112]. 
trigonous — three-angled; applied to a three-keeled perianth (see epigonianthus and 
hypogonianthus) [f1008, g235, s1114]. 
1084 trilete — applied to polar spores with with a triradiate ridge on the proximal face and a 
more or less convex distal face [f1009, 1021, s11 13]. 
1085 triradiate — — Y-shaped, often used in reference to the prominent ridge on the proximal 
S ome of a trilete spore [f1010, g580, 1022, s 1115]. 
Vitesigieni ipods ; €, leaves on a stem [f1011, g236, s1116]. 
m UR B 
, ade thickness [f1013, g237, s11 
se tuber iur off or f squared off at the apex [f1014, 397, 1118]. 
) a geotropic outgrowth from the shoot apex, composed of 
1083 
