Lithops - Au Cactus Francophone

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perience, namely that, although one can determine the general nature of the colour, such as yellow for example, there are so many shades of this colour that when one wants to describe a specific shade the difficulty starts. The top surface is often not uniform in colour as for example in L. pseudotruncatella. Furthermore small areas of the upper surface often differ from one another, as in L. karasmontana, thus while the description may be true for one part of the top it is not correct for a part a few millimetres away. As the leaves become older, the differences of the various parts become accentuated. When plants are removed from their natural habitat and grown in Europe and in the moister parts of South Africa the top tends to lose its brilliance. The plant also under such conditions protrudes above the ground, becomes more concave, and assumes a greener tint than material fresh from the field. A representative of this genus which thrives in a part of the country (Bethlehem, Pretoria) with a fairly heavy rainfall is L. Lesliei. L. terricolor though occasionally found near Port Elizabeth, which has a fairly regular and heavy rainfall, is characteristic of the driest parts of the Cape Province (Ceres, Karroo, Laingsburg) with about two inches per year. There is sometimes a marked difference between the colouration of the depressions and the ridges of the rugose species such as L. karasmontana, L. gracilidelineata. The network, which is sometimes a prominent feature of the top surface, also shows a great deal of variation, not only in the way it anastomises but also in its colouration. An extreme case is that of L. pseu‑ dotruncatella and L. verruculosa. The case of L. Vallis‑Mariae should also be mentioned. In thus particular plant, the surface which appears uniform to the naked eve consists in reality of a large number of ridges with vermiform convolutions, giving the idea of sintered limestone. In determining a species of <strong>Lithops</strong> a careful and close study must be made of the markings, especially those on the depressions. L. Erniana has a darkly coloured depression, but at the end of this depression one notices short brown lines with a buff border. These lines stand at right angles to the main depression. Red dots or short lines mark the intersection of the slight depressions of L. chrysocephala. Species with red dots or warts fall into two distinct groups: (i) those like L. Dinteri, L. Dorotheae and L. insularis, where the red dots are embedded in the tissue and are level with it, and (ii) L. Inae, where the red shiny dots stand up above the surface of the leaf. In the first group the cell walls are coloured red, whereas in L. Inae the cell cavities contain the liquid anthocyan. 10 WINDOW As already pointed out the top surface of the leaf is apparently opaque, although it lets light through as can be easily proved by cutting the top off,
fig. 3 . longitudinal section through plant body of lithops. C, epidermis with underlying chlorenchyma (dotted); L, Bud (young growth of following year); M, Tissue of colourless (transparent) cells; W, Window or upper face; F, Fissure.
Page 3: L I T H O P S B Y G . C . N E L
Page 6 and 7: Printed by Hortors Limited, 78, Bre
Page 8 and 9: page 35. Lithops olivacea 122 36. L
Page 10 and 11: figure page 46 . Lithops gracilidel
Page 13 and 14: LIST OF COLOURED PLATES Plate 1 . L
Page 17 and 18: PREFACE A Monograph on any genus sh
Page 19 and 20: INTRODUCTION THE name Lithops is de
Page 21 and 22: which enclose between them the new
Page 23 and 24: In the ease of Lithops terricolor,
Page 25: L. salicola occurs at two places ap
Page 30 and 31: It would appear that the top surfac
Page 32: colouration: (v) L. Fulleri also ha
Page 35 and 36: As will be described later, its mai
Page 37 and 38: figure 8 . lithops gracilidelineata
Page 39 and 40: to the prevailing winds, and being
Page 41: fig. 13 . capsule of lithops optica
Page 44 and 45: Pleisopilos > Pleiospilos Lithops >
Page 46 and 47: lau”. > blau. He goes on to say t
Page 48 and 49: Flower single produced between the
Page 50 and 51: soek. Dit is hom geluk om die kleur
Page 52 and 53: INLEIDING DIE naam Lithops kom van
Page 54 and 55: algemene hou van die plant as gehee
Page 56 and 57: in hulle natuurlike woonplek, is pl
Page 58 and 59: voor, dat jou moeilikhede begin wan
Page 60 and 61: val van ’n plant soos bv. L. pseu
Page 62 and 63: westekant van Suid Afrika liet die
Page 64 and 65: Luckhoff > Lückhoff 300-350 myl. E
Page 66 and 67: In die veld het ek al van tyd tot t
Page 68 and 69: Drie plante elkeen waarvan uit twee
Page 70 and 71: L. verruculosa, en L. Van‑Zylii,
Page 72 and 73: 1. LITHOPS AUCAMPIAE * Indicates Or
Page 75 and 76: figure 15 . lithops aucampiae l. bo
Page 77:
plate 2 . lithops aucampiae l. bol.
Page 81 and 82:
wat heelwat van mekaar in die aard
Page 84 and 85:
plate 4 . 1 and 2. lithops bella (d
Page 86 and 87:
verhewe bokant die oppervlakte van
Page 88 and 89:
figure 19 . lithops bromfieldii l.
Page 91 and 92:
✱Lithops Brevis. Folia subaequali
Page 93:
plate 6 . 1. lithops chrysocephala
Page 97 and 98:
figure 21 . lithops chrysocephala n
Page 100 and 101:
plate 8 . lithops divergens l. bol.
Page 102 and 103:
figure 23 . lithops comptonii l. bo
Page 104 and 105:
figure 25 . lithops comptonii l. bo
Page 106 and 107:
figure 27 . lithops dendritica nel
Page 108 and 109:
figure 29 . lithops dinteri schwant
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figure 31 . lithops divergens l. bo
Page 112 and 113:
figure 33 . lithops eberlanzii (dtr
Page 115 and 116:
11. LITHOPS EBERLANZII Lithops Eber
Page 117 and 118:
✱Lithops Eberlanzii. Corpuscula 2
Page 119:
plate 10 . lithops erniana loesch e
Page 122:
figure 38 . lithops fulleri n.e. br
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lineal lanzettlichen Petalen. Die z
Page 127:
plate 12 . lithops fulleri n.e. br.
Page 130 and 131:
the latter is usually very slightly
Page 134 and 135:
plate 14 . lithops fulviceps n.e. b
Page 136:
figure 43 . lithops gracilidelineat
Page 139 and 140:
of numerous ridges and elevations,
Page 141:
plate 15 . 1. lithops geyeri Nel 2.
Page 145 and 146:
geisoleer en nie met mekaar verbind
Page 147:
plate 16 . 1. lithops gulielmi l. b
Page 150 and 151:
odies. As far as the leaves go, L.
Page 154 and 155:
plate 17a . lithops herrei l. bol.
Page 156:
inclusum; receptaculum apicem folio
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pearing to be solid; outer margin i
Page 161:
plate 19 . lithops julii (dtr. et s
Page 164 and 165:
figure 55 . lithops julii (dtr. et
Page 166 and 167:
figure 57 . lithops julii (dtr. et
Page 170 and 171:
plate 20a . lithops karasmontana (d
Page 172 and 173:
Koerpe chens > Koerper chens Kiesel
Page 174:
figure 60 . lithops kuibisensis dtr
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Griffel überragen mit ihren zurüc
Page 179:
plate 21 . lithops kuibisensis dtr.
Page 182 and 183:
figure 64 . lithops kunjasensis dtr
Page 186 and 187:
plate 22 . lithops kunjasensis dtr.
Page 188:
figure 66 . lithops lesliei n.e. br
Page 191 and 192:
28. LITHOPS LINEATA lineata, > line
Page 193:
plate 23 . lithops lesliei n.e. br.
Page 197 and 198:
Lithops marginata. (Plaat 24) Plant
Page 199:
plate 24 . 1. lithops lineata nel 2
Page 202 and 203:
figure 72 . lithops marmorata n.e.
Page 206 and 207:
plate 26 . lithops marthae loesch e
Page 208:
figure 74 . lithops mennelii l. bol
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nulla, supra leviter convexum, rose
Page 213:
plate 28 . lithops meyeri l. bol.
Page 217 and 218:
figure 77 . lithops meyerii l. bol.
Page 219:
plate 30 . lithops olivacea l. bol.
Page 222 and 223:
Fig. 80 is a photo of a group of pl
Page 226 and 227:
plate 32 . lithops otzeniana nel
Page 228:
South West Africa; growing in sand
Page 231 and 232:
figure 84 . lithops otzeniana nel f
Page 233:
plate 33a . lithops pseudotruncatel
Page 236 and 237:
plözlich > plötzlich übergangsge
Page 239 and 240:
unmittelbaren Nähe des Spaltes bef
Page 241:
plate 33b . lithops pseudotruncatel
Page 245 and 246:
figure 91 . lithops pseudotruncatel
Page 248 and 249:
plate 35 . 1. lithops ruschiorum (d
Page 250 and 251:
Kieselstein oder > Kiesel tein oder
Page 252 and 253:
figure 97 . lithops salicola l. bol
Page 255 and 256:
Plabt > Plate Lithops salicola. (Pl
Page 257:
plate 36 . lithops terricolor n.e.
Page 261 and 262:
windows; numerous minute white dots
Page 264 and 265:
plate 37 . lithops triebneri l. bol
Page 266 and 267:
figure 103 . lithops triebneri l. b
Page 268 and 269:
figure 106 . lithops urikosensis dt
Page 271 and 272:
figure 108 . lithops vallis mariaz
Page 273:
plate 38a . lithops turbiniformis (
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tige tint; buitenste en binneste so
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plate 40 . lithops vallis mariae (d
Page 282 and 283:
tirely different to those where the
Page 284 and 285:
ondeursigtig; in die jong stadium i
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South West Africa: Mariental. (Fig.
Page 289:
plate 41a . lithops van zylii l. bo
Page 293 and 294:
deursigtig; boonste vlak wit grys b
Page 297 and 298:
Die planteliggaam is 1.5-2 cm, bree
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deur die geheel ’n gerimpelde voo
Page 301 and 302:
Hierdie twee portrette (Fig. 117-11
Page 304 and 305:
1. afenestratae KEY TO SPECIES Uppe
Page 306 and 307:
ii. fenestratae Upper surface eithe
Page 308 and 309:
B. aRubRae. Window without red dots
Page 310 and 311:
172 xx. Window coloured (reddish, m
Page 312 and 313:
ABBREVIATIONS OF LITERATURE ON FOLL
Page 314 and 315:
Lithops Gulielmi L. Bol. in L.B. II
Page 316:
Luckhoff > Lückhoff Lithops salico
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Lithops - Au Cactus Francophone

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