GLOSSARY AND INDEX. 219 



Repand, wavy-margined, 55. 



Repent, creeping, i. e. prostrate and rooting underneath. 



Replum, the frame of some pods (as of Prickly Poppy and Cress), persistent after 



the valves fall away. 

 Reptantj same as repent. 



Resupinate, inverted, or appearing as if upside down, or reversed. 

 Reticulated, the veins forming network, 50. Retiform, in network. 

 Retinerved, reticulate-veined. 

 Retrojlexed, bent backwards; same as reflexed. 

 Retuse, blunted; the apex not only obtuse but somewhat indented, 54. 

 Revolute, rolled backwards, as the margins of many leaves, 72. 

 Rhachis (the backbone), the axis of a spike or other body, 73. 

 Rhaphe, the continuation of the seed-stalk along the side of an anatropous ovule or 



seed, 112, 126. 



Rhaphides, crystals, especially needle-shaped ones, in the tissues of plants, 137. 

 Rhizanthous, flowering from the root. 

 Rhizoma, Rhizome, a rootstock, 42-44. 



Rhombic, in the shape of a rhomb. Rhomboidal, approaching that shape. 

 Rib, the principal piece, or one of the principal pieces of the framework of a leaf, 



or any similar elevated line along a body, 49, 50. 

 Rimose, having chinks or cracks. 

 Ring, an elastic band on the spore-cases of Ferns, 159. 

 Ringent, grinning ; gaping open, 92. 

 Riparious, on river-banks. 



Rivalis, Latin for growing along brooks; or Riwlaris, in rivulets. 

 Root, 33. 

 Root-hairs, 35. 



Rootlets, small roots, or root-branches, 33. 



Rootstock, root-like trunks or portions of stems on or under ground, 4. 

 Roridus, dewy. 



Rosaceous, arranged like the petals of a rose. 

 Rostellate, bearing a small beak (Rostellum). 

 Rostrate, bearing a beak (Rostrum) or a prolonged appendage. 

 Rosulate, in a rosette or cluster of spreading leaves. 

 Rotate, wheel-shaped, 89. 

 Rotund, rounded or roundish in outline. 



Ruber, Latin for red in general. Rubescent, Rubicund, reddish or blushing, 

 Rudimentary, imperfectly developed, or in an early state of development. 

 Rufous, Rufescent, brownish-red or reddish-brown. 

 Rugose, wrinkled ; roughened with wrinkles. 

 Ruminated (albumen), penetrated with irregular channels or portions, as a nutmeg, 



looking as if chewed. 

 Runcinate, coarsely saw-toothed or cut, the pointed teeth turned towards the base of 



the' leaf, as the leaf of a Dandelion. 

 Runner, a slender and prostrate branch, rooting at the end, or at the joints, 40- 



Sabulose, growing in sand. 



Sac, any closed membrane, or a deep purse-shaped cavity. 



Saccate, sac-shaped. 



Sagittate, arrowhead-shaped, 53. 



Salsuyinous, growing in brackish soil. 



Salver-shaped, or Salver-form, with a border spreading at right angles to a slendei 



tube, 89. 



Samara, a wing-fruit, or key, 122. 

 Samaroid, like a samara or key-fruit. 

 Sap, the juices of plants generally, 136. Bapwood, 142. 

 Saprophytes, 37. 

 Sarcocarp, the fleshy part of a stone-fruit, 120 



