ENGLISH 33 
751 papilla (pl. papillae) —- cell ornamentation, a solid microscopic protuberance (see 
papillose, and slime papilla) [f698, g730, -— 
752 papillose — bearing papillae; monopapillose -- i simple on 
the cell surface; multipapillose — bearing several pupillus, or one compound or r branched 
papilla on the cell surface (see C-shape papillae). Loosely applied to any minutely rough 
surface, that may be strictly mammillose; e.g., pottioid leaves [f702, g731, 1084, s828]. 
752a paracyst — see ocellus [f666, g-, 833]. 
753 paradermal — applied to section cut parallel to the surface; commonly employed to study 
the air pore morphology of thalloid liverworts [f704, g-apx, s834]. 
754 paramphigastrium - see rhizoid disc [f705, g-apx, s837]. 
755 paraphyllium (pl. paraphyllia) — small green outgrowths of various shapes, i.e., filiform, 
lanceolate, scale- or leaf-like or sometimes branched; produced randomly on the stems or 
branches of many pleurocarpous mosses; e.g., Thuidium. In hepatics, occasionally on 
stems or associated with perigonial bracts; e.g., Scapania; (cf. pseudoparaphyllia). [f706, 
g732, s835]. 
756 paraphysis (pl. paraphyses) -- hyaline or yellowish, usually uniseriate, hair often 
associated with antheridia and archegonia of mosses [f707, g733, s836]. 
757 parateniola (pl. parateniolae) — extension of teniola into the sheathing base, either 
replacing the teniola proximally or lying just outside it; distinguished by being unistratose 
called mesohyalocysts) [f708, g735, s838]. 
758 parenchyma (pl. parenchymata) — a tissue of relatively undifferentiated, usually thin- 
walled and isodiametric cell, with non-overlapping end walls (opposed to prosenchyma) 
[f709, g736, s839]. 
759 paroicous — with antheridia and archegonia in a single gametoecium but not mixed, the 
antheridia in the axils of bracts just below the bracts surrounding the archegonia 
(paroecious; see note after autoicous) [f711, g737, s840]. 
760 patent — of leaves spreading from stem at an angle of 45? or more [f370, g9, s841]. 
761 patulous -— spreading at an angle between 45? and 90? [f370, g9, $842 
761a peat -- decomposed vegetable matter (including Sphagnum) [f1000, g1017, s1124]. 
762 pectinate — comblike; e.g., as in leaf hyalocysts of some species of Sphagnum having 
lateral wall papillae [f712, g543, s843]. 
763 mto borne on a stalk or pedicel, such as most bryophyte gametangia [f713, g395, 
2. M. » :11 
764 aeta -— thriving in upland or level country [f1099, g739, 845]. 
765 pegged rhizoids -- see tuberculate rhizoids [f859, g1101, $1004]. 
766 pellucid — clear, translucent or transparent [f714, g244, s850]. 
767 peltate — shieldlike structure fixed on a central stalk [f715, g883, s849]. 
768 pendent (pendant) — hanging downward (cf. inclined, pendulous) [f716, g435, s851]. 
769 pendular -— back and forth; an apical cell segmentation sequence that reverses direction 
following each complete revolution (cf. helical) [f717, g741, s852]. 
770 pendulous — hanging, pendent; e.g., capsules drooping and inclined beyond horizontal; 
stems and branches that hang [growth form common in forests] [f716, g435, s853]. 
771 penicillate — brushlike and coming to a point; applied to habit of short plants or tops of 
plants with tufts of erect, narrow leaves [f718, g767, s854]. 
772 percurrent — extending to the apex [f720, g242, s855]. 
