CLASS MAGNOLIOPSIDA 58 57 56
2
206 C L A S S MAGNOLIOPSIDA 56 CLUSIACEAE the St. John's-wort Family HYPERICUM L. I Stamens numerous, in 3-5 clusters; fruiting capsule 3 celled when seeds begin to mature. Plants perennial, usually in dense patches, the stems tough, 4-8 dm tall, branched above. Leaves linear-oblong, 2-4 cm long, their bases rounded but not meeting around the stem. Flowers in compound cymes, the petals 6-9 mm long. Occasional as a weed over the state. Jun--Jul. St.John's wort H y p e r i c u m perforatum L. 1' Stamens usually not more than 12, not in clusters; fruiting capsule 1-celled when seeds begin to mature. Plants perennial, stems sparingly branched above, 3-6 dm tall. Leaves lanceolate, 2-4 cm long, broadly obtuse or rounded at the base, the basal margins meeting around the stem. Flowers yellow, numerous in cymes, the petals 2.5-4 mm long; fruiting capsule up to 7 mm long. Advent ive as a weed in waste places. Jul--Aug. greater St. John's wort H y p e r i c u m majus (Gray) Britt. 57 T I L I A C E A E the Linden Family TILIA L. Tilia americana L . T r e e to 30 m ; leaves broadly ovate to sub-rotund, the blade base oblique, with sharply serrate margins. Leaf surfaces becoming glabrous towards maturity. Flowers i n cymes on a long peduncle from a leaf-like bract that is narrow and elongate; petals yellow-green, 7-10 mm long, with staminodes, fragrant. Fruit a nutlike berry 7-9 mm in diameter. Frequent in remnants o f rich woods, usually in ravines and north facing loamy slopes in the e and ne. Jun--Jul. linden, basswood. 58 MALVACEAE the Mallow Family (Key to Genera) 1 Fruit a 5-carpelled capsule with loculicidal dehiscence; petals yellow with purple bases H I B I S C U S 1' Fruit a schizocarp of 5 to many carpels in a ring and separating at maturity. 2 Each carpel with 2 or more seeds A B U T I L O N 2' Each carpel with only 1 seed. 3 Stigmatic surface across the top of the abruptly widened style top; flowers salmon red S P H A E R A L C E A 3' Stigmatic surface along the sides of the upper part of the style. 4 Flowers 6-9, un 4' Flower flower 5 Peta with 5' Pet car Abutilon theophras branched. Leaves a crenate margins, 1 pubescence. F l o w e yellow, 1-1.5 cm Frequent i n weedy Aug--Sep. velvet l Althaea rosea L. more, coarsely hai and up to 3 dm acr upper axils, white more carpels aroun Commonly p l a n t e d places. J u l --Sep. Callirhoe alcaeoid rootstock, the st triangular in outl irregular incision loose corymbs, o r rose; corolla 1-1 Jun--Jul. poppy m Hibiscus trionum L stems 1-5 dm tall. irregularly lobed, axillary peduncle purple bases; frui weed over the stat 1 Petals white o cm. 2 Mature fruit
Transcript of CLASS MAGNOLIOPSIDA 58 57 56
206 CL
AS
S M
AG
NO
LIOP
SID
AC
LASS M
AG
NO
LIOP
SID
A
20
7
56 CLU
SIA
CE
AE
the St. J
oh
n's
-wo
rt Fa
mily
HYPERICUM L.
I Sta
me
ns num
erous, i
n 3
-5 c
lus
ters
; fruitin
g ca
psu
le 3
ce
lled
when s
ee
ds
be
gin
t
o m
atu
re. P
lan
ts p
ere
nn
ial, u
su
ally
indense p
atch
es, th
e stem
s tou
gh
, 4-
8 dm
tall, b
ran
ch
ed
above.Leaves lin
ea
r-ob
lon
g, 2
-4 cm
lon
g, th
eir bases rounded b
ut n
ot
meeting a
rou
nd
the
ste
m. F
low
ers
i
n co
mp
ou
nd
cymes, th
ep
eta
ls 6-9
mm
lon
g. O
cc
as
ion
al a
s
a w
ee
d o
ve
r the
sta
te.
Jun--Ju
l. St.J
oh
n's
wo
rtHy
pe
ri
cu
m p
erfo
ratu
m L
.1' S
tamens u
su
ally
no
t more th
an
12
, no
t in c
lus
ters
; fruitin
gcapsule
1-c
elle
d w
he
n s
ee
ds
be
gin
t
o m
atu
re. P
lan
tsp
ere
nn
ial, stem
s sp
arin
gly
branched above, 3-6
dm ta
ll. Leavesla
nce
ola
te, 2
-4
cm
lon
g, b
roa
dly
ob
tus
e o
r rounded at th
ebase, th
e b
asa
l ma
rgin
s me
etin
g a
rou
nd
the
ste
m. F
low
ers
yello
w, num
erous in cym
es, the
pe
tals
2.5
-4 m
m lo
ng
; fruitin
gcapsule u
p to
7 m
m lo
ng
. Ad
ve
nt ive a
s a w
eed in w
aste pla
ces.
Jul--Au
g. g
rea
ter S
t. Joh
n's w
ort
Hy
pe
ri
cu
m m
ajus (Gra
y) Britt.
57 TIL
IAC
EA
Ethe L
ind
en
Fa
mily
TILIA
L.
Tilia
am
erica
na
L.
Tr
ee
to 30 m
; lea
ve
s b
roa
dly o
va
te to
sub-rotu
nd
, the
bla
de
base ob
liqu
e, w
ith sh
arp
ly serra
te m
arg
ins.
Leaf surfa
ces becom
ing gla
bro
us
tow
ard
s m
atu
rity. Flo
we
rs
in
cymes o
n
a lo
ng
peduncle from
a le
af-lik
e b
ract th
at is
na
rrow
and elo
ng
ate
; pe
tals
ye
llow
-gre
en
, 7-1
0 m
m lo
ng
, with
staminodes,
frag
ran
t. Fru
it a n
utlik
e b
erry
7-9
mm
in
dia
me
ter. F
req
ue
nt
in rem
na
nts
of
rich
woods, u
su
ally
in ra
vine
s an
d n
orth
fac
ing
loamy slo
pe
s in th
e e
an
d n
e. J
un
--Ju
l. lind
en
, basswood.
58 MA
LVAC
EA
Ethe M
allo
w F
am
ily
(Key to
Genera)
1 Fru
it a
5-c
arp
elle
d c
ap
su
le w
ith lo
cu
licid
al d
eh
isc
en
ce
;p
eta
ls ye
llow
with
pu
rple
basesHI
BI
SC
US
1' Fru
it a
sc
hiz
oc
arp
o
f
5
to
ma
ny
ca
rpe
ls
in
a r
ing
andse
pa
ratin
g a
t ma
turity.
2 Ea
ch
carp
el w
ith 2
or m
ore seedsAB
UT
IL
ON
2' Ea
ch ca
rpe
l with
on
ly 1
see
d.
3 Stig
ma
tic su
rface
acro
ss the
top
of th
e a
bru
ptly
widened
style to
p; flo
we
rs sa
lmo
n re
dS
PH
AE
RA
LC
EA
3' Stig
ma
tic s
urfa
ce
alo
ng
the
side
s of th
e u
pp
er p
art o
fthe s
tyle
.
4 Flo
we
rs 7
-10
cm a
cro
ss
; bra
ctle
ts b
elo
w th
e flo
we
r6-9, u
nite
d a
t the
ir ba
se
s...., A
LT
HA
EA
4' Flo
we
rs les
s th
an
6
cm a
cross; b
rac
t lets b
elo
w th
eflow
er 3 o
r few
er.
5 Pe
tals
ob
cord
ate
with
a n
atch
at th
e a
pe
x; ca
rpe
lsw
itho
ut b
ea
ks M
AL
VA
5' Pe
tals
trun
cate
with
ou
t a n
otch
at th
e d
ista
l en
d;
carpels beakedCA
LL
IR
HO
E
ABUTILO
N M
ill.A
bu
tilon
the
op
hra
sti Me
dic. A
nn
ua
l he
rb .5
-1.5
m ta
ll, sp
arin
gly
branched. Le
av
es
alte
rna
te, p
etio
led
, the
bla
de
s rounded, with
crenate ma
rgin
s, 1
0-2
5 c
m a
cross; fo
liag
e co
vere
d w
ith a
so
ftpubescence. F
low
ers
mo
stly ax
illary
in th
e u
pp
er p
art, p
eta
lsye
llow
, 1-1
.5 c
m lo
ng
; fru
its w
ith s
ha
rply
tipp
ed
carp
els.
Frequent in
weedy p
as
ture
s a
nd
cu
ltiva
ted
field
s
in
the
e
.Aug--S
ep. ve
lve
t lea
f.
ALTHAEA L.
Althaea ro
se
a L
. T
al
l p
ere
nn
ials w
ith sim
ple
stems to
2 m
or
more, co
arse
ly ha
iry. Le
av
es
larg
e th
e b
lad
es co
rda
te-o
rbic
ula
rand u
p to
3 dm
acro
ss. Flo
we
rs m
any in peduncled c
lus
ters
in th
eupper a
xils
, wh
ite to
pu
rple
, up
to 10 cm
acro
ss; fruits
of 1
5 o
rm
ore carp
els a
rou
nd
a
ce
ntra
l ax
is, s
ep
ara
ting
at m
atu
rity.
Com
monly p
lan
ted
an
d p
ers
istin
g a
rou
nd
ho
me
stea
ds a
nd
waste
places. Ju
l--Se
p. h
olly
ho
ck
.
CALLIR
HO
E Nu
tt.C
allirh
oe
alca
eo
ide
s (Mich
x.) Gra
y Pe
ren
nia
l he
rb fro
m a
thic
kro
otsto
ck, the
ste
ms
bra
nc
he
d,
to
4 dm
tall. L
ea
ve
s o
vate
totria
ng
ula
r in o
utlin
e, p
alm
ate
ly v
ein
ed
, with
se
ve
ral d
ee
p,
irreg
ula
r inc
isio
ns
, low
er le
av
es
lon
g-p
etio
led
. Flo
we
rs
in
loose corymbs,
or
so
litary
in upper a
xils
, the
pe
tals
pin
k
or
rose; co
rolla
1-1
.5 c
m lo
ng
. Ra
re
in
dry
so
il i
n th
e s
.Jun--J
ul. p
op
py
ma
llow
.
HIBISC
US L
.H
ibiscus trion
um
L. A
nn
ua
l he
rb, sp
rea
din
g irre
gu
larly
, the
stems 1
-5 dm
tall. L
ea
ve
s w
ith coarse h
airs
, mo
stly
3-5
pa
rted
,irre
gu
larly
lob
ed
, ov
ate
to o
rbic
ula
r i
n o
utlin
e. F
low
ers
on
ax
illary
pe
du
nc
les
, the
pe
tals
3-4
cm lo
ng
, ye
llow
, with
deepp
urp
le bases; fru
iting
cap
sule
s subglobose, ha
iry. Fre
qu
en
t as
aw
eed ove
r the
sta
te. J
ul--A
ug
. flow
er-o
f-an
-ho
ur.
MALVA L
.1 P
eta
ls w
hite
o
r ro
sy
ting
ed
, us
ua
lly n
ot m
uch lon
ge
r tha
n 1
cm.
2 Ma
ture
fruits
rou
nd
ed
in o
utlin
e, th
e in
div
idu
al c
arp
els
