BOTANICAL REPORT. 
439 
Plate 1. Echinocactus Simpsoni as it appears in early spring; tm the vertex a young 
growth of tubercules is visible, their tops covered with wool. 
Plate 2. Details of the same. 
Fig. 1. Four tubercules from near the vertex, one shows the broad scar where the 
fruit has fallen off, another one is just developing its spines, exhibiting their 
points above the thick wool. 
Fig. 2. A detached tubercule bearing a ripe fruit. 
Figs. 3 and 4. Flowers with the upper part of the tubercule and its young spines* 
Figs. 5 and 6. The fruit magnified three times; fig. 5 showing the basal opening, 
fig. 6 the broad umbilicus. 
Fig. 7. A scale of this fruit, more magnified, with two axillary spines. 
Figs. 8-12. Seed: fig. 8 natural size, the others eight times magnified; fig. 9 lat¬ 
eral, fig. 10 dorsal, fig. 11 basal view; fig. 12 part of the surface, highly mag¬ 
nified. 
Fig- 13. Embryo, enveloped in the inner seed-coat, including also the albumen; 
magnified. 
Fig- 14. Lateral, fig. 15 frontal view of the embryo, magnified. 
Fig. 16. Seedling, a few weeks old, magnified. 
** Fig- 17. Tubercules of the smaller variety from Colorado, in every state of devel¬ 
opment. * 
0 Echi^ocactus pubispinus (spec, nov.)* parvulus, turbinatus, costis 13 subobli- 
quis compressis interrupts tuberculatis; areolis orbiculatis, aculeis brevibus, rectis seu 
saepe curvatis albidis * apice adustis velutinis demum nudatis; radialibus superioribus 
1-2 robustioribus, longioribus rectis curyatis seu hamatis, ceteris 5^8> brevioribus ; 
aculeo centrali deficiente seu singulo robustiore longiore arrecto sursum hamato; 
flore?; fructu?, 
Pleasant Valley, near the Salt Lake Desert, found May 9 without flower or 
fruit. Plant 2 inches high, 1 or 1J in diameter; compressed tubercules 4-6 liifW dis¬ 
tant from one another, confluent in 13 ribs, radial spines 1-4 lines long, white pubes¬ 
cent or almost tomentose, more so than I have observed it in any other cactus; on the 
lower areolae, I find only 5-6 spines, the upper ones a little longer and stouter than 
the balance; farther upward, the number increases to 10, one or more of the upper 
ones becoming still stouter and often hooked; at last here and there a single central 
spine makes its appearance, 5-6 lines long, the strong hook always turned inward or 
upward. At first* only the dusky point of the spine is naked; with age, the whole 
coating seems to wear off. In another specimen, I find the sjpines 8-12 in number, a 
little longer, more slender, all radiating. The small supraspinal areola proves this 
plant to be an Echinocactus ; it probably belongs; together with the next, to the sec¬ 
tion Hamati, Synops. Cact. p. 15. 
Echinocactus Whipplei, Engelm. & Bigelw , Pacif.B. Bep. IV , Cact. p. 28, 1. 1, Syn. 
Cact.p. 15. Var. spinosior: globosus; costis 13 compressis interruptis; aculeis radialibus 
9-11, inferioribus saepe obscurioribus, reliquis longioribus niveis, 2 superioribus saepe 
* This description has been published in Trans. Acad. St. Louis, vol. 2, p. 199 (1863). It is rather strange that 
neither this nor the above-mentioned E. papyracanthus has ever been found again (January, 1876). 
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